In-laws spreading rumors

So this will be an update from a previous post of mine about the in-laws starting rumors my husband and I were keeping thw kids away from them. A lot of people were saying how we were and then made claims I lied when I updated my post. So I'll go a little more into depth here.

My son was spending 2 nights at a time with them, twice (in a row) he came back with a bruised and swollen ear, when asked about it, their story changed everytime with what happened. The last time he went, he was crying and screaming that he didn't want to go, he was holding onto me crying "mommy no, I stay". My husband and MIL ripped him away from me and got him in the car, he was screaming and reaching for me yelling "mommy no". That was traumatizing seeing him like that and for sure tramatizing to him. When he came back on the 3rd day, I was sitting on the couch with him cuddled into me, he then (first time EVER doing this) he grabbed my hand and forcefully shoved it in his pants, I pulled my hand out and said "no, we don't do that" and he did that 3 more times that day. A couple nights later after I had pulled him out of the tub, I laid him on our couch to dress him and realized I forgot a diaper for him, I got up to go get him one, I came back and he had his legs up into his chest with a finger in his anus. I yelled "don't you ever do that again!", I know bad reaction, but I was in shock. My FIL is a drug addict. Which is why I was never comfortable with our son going over. But my husband insisted. After that sleepover that weekend both in laws stopped by to grab stuff from my husband, my son at first started to freak out. He ran to his room and hid under his blankets and wouldn't come out. I went back and sat with him and told him that he was staying with us and not going anywhere. He came out and did talk to them a little and played, but for the most part was super standoff with them. He won't let them hug him at all. After all of that, I talked with my therapist who told me to stop sleepovers with them and keep all of our kids away. I talked with my husband and we agreed no more sleepovers and that we would do supervised visitation only. (My husband still doesn't fully believe his parents did anything to our son). So he talked with them and let them know we were done doing sleepovers, and after that they haven't tried coming around unless they need stuff off of us. They don't ask about the kids or anything. Fast forward to we bought a house and were getting ready to move, my husband asked if they wanted to help to which they said "fuck no we're not helping with that shit". So we moved ourselves. My husband called a week after we moved in and settled a little inviting them over, they declined, we ended up getting sick with covid, we let them know, and that's when they started rumors about how we were keeping the kids from them and not allowing them to see the kids and wouldn't let them come visit. We've been in this house for a little over a month now and the MIL came over Saturday, only because it was my husband's birthday the week before. My FIL was suppose to come but didn't. Now, when my MIL came over, I was upstairs in the bathroom getting dressed and my husband answered the door, our son saw her and ran up the steps and came in the bathroom with me, he sat down. When I was done I said "come on buddy lets go see grandma" and he said "no mommy no, I stay with you mommy, no" and I said "buddy she's not taking you, you're staying with mommy and daddy, she came to visit you" and he says "no mommy no". I ended up having to carry him down and he sat on my lap for a while was extremly standoffish with her. He did eventually start to play and did start talking with her but still wouldn't let her touch, hug, or kiss him. And after that visit, the following day my BIL called my husband saying how their parents were telling everyone we called CPS on his ex (lives in another state) and how they're saying we're not letting them spend any time with the kids still. Saying how we aren't letting them doing sleepovers anymore and how we're still keeping the kids from them.

Now we did invite them for Thanksgiving and they turned us down. We've invited them over about 6 times now, and they're not wanting to come over.

I will continue to not let my son stay tge nights with them, nor will I let them take him for the day. You can go ahead and state "I'm keeping him away from them", I don't care. I'm listening and protecting my baby. The in-laws can come visit him here, if they don't want to, that's on them. My son hasnt been doing anything odd anymore, he's back to be a very sweet loving little boy. No odd behaviors anymore.

Edit- my son is only 3. I've tried the doll, tried talking to him and asking question but he doesn't seem to understand anything. I'm wanting to cut his parents out. With all the drama his parents are causing I believe he might be now too. My husband is a great father and husband but he never had loving parents and I think that's why he's so hesitant, he's just wanting their approval and love. I think he's at the point of giving up on them and dropping them.