Was I wrong?

I have been with my husband for 5 years, dating for 2 years and married for 3; we also have a 1year old daughter. Since our daughter was born our relationship has been rocky to put it mildly. My husband has a long history of substance abuse (opiate dependency); the last time he relapsed was back in 2015 after our son passed away. He was in active addiction for 10 months before he went to rehab and has been sober ever since...or so I thought.

I began to notice the smell of weed on his clothing; I would ask him about it and he would deny it. Well this past Sunday I went out to my car to grab my charger when I came across him smoking a bowl on the side of our garage. We immediately began arguing; I grabbed the bowl from him and smashed it down on the concrete walkway. I reminded him how I was adamant that no drugs be in our home. He said he was smoking because he was stressed; he then said he was leaving an going to his parents house. I proceeded to tell him that I would share with them the fact that he has decided to resume using drugs. *Side note* his relapse in 2015 began with him smoking weed and then progressively he fell back into opiates. His parents were/are my biggest support system during that time as I am estranged from most of my family.

His mother said she suspected he was doing drugs again as she was certain she smelled it on him a few weeks ago. His parents said they are disappointed because they hoped that with the birth of our daughter and his years of sobriety that he finally was getting his act together. He refuses to speak to me because I said something to them (he said he doesn't ever want to speak to me again actually) and he is upset I broken the bowl.

Was I wrong for saying something to his parents? Should I have kept it to myself? I know some people feel weed isn't a big deal, but when you have someone who was used drugs since they were 13 years old and has been to rehab more than 10 times, any drug use can be detrimental.