How would you feel about your husband going away to a men's retreat for the weekend?

My husband has been struggling badly with mental health for the last couple months. He has depression, autism and CPTSD. His mental health has started seeping into his work. He got pulled into his bosses office for crying at work and they told him that his job covers up to 6 days a year at a men's retreat(they have one for women too). It focuses on mental health. Character grown and building bond between men. My husband decided to go for the weekend and at first I thought he could use it. Then several of my friends told me they would never let their husband go on a retreat with other sad possibly horney men and that what if they all decide to go to a strip club or something. One of my friends is Christian. I'm not but she said allowing him to do this could be allowing temptation into my home. Because those men will also be sad and miserable and misery loves company so they could talk my husband into doing something that could destroy our family. My husband is a great man. Amazing father. He became a SAHD so I could complete my dreams for a while before going back to work. His trauma has taught him how to be the most loving father. He tells our boys to show their emotions and is amazing. But my friends say most people don't go into marriages thinking their men would cheat. That she never thought her husband would and he did and they're trying to rebuild their marriage. Would letting my husband go on this retreat possibly ruin our marriage?

Edit: The retreat itself isn't owned by his job. They just pay 6 days a year for their employees to go there and from what I've been told most don't use it because they don't know the job pays for it. My husband was told because he was crying at work. From what I understand it's mainly to get away and ground you when your emotions are already so high. It's not like a mental health hospital. It's more so a place for you to get away and calm you down for a moment from life's stressors and clear your mind so that you can think clearly. They're owned by the same people who do the women's retreat and I've heard good things about the women's one. I don't think he would run into anyone from work there. It doesn't sound from what the website and broucher are that it's teaching toxic masculinity. If anything it's talking about learning how to lean on other men for emotional support and telling people how you feel.