f*ck appropriate, he basically kidnapped your child and won’t let you see or speak to him. He’s acting wacky, and CPS and social workers are involved? His CO is probably already aware something is going down... but you need to inform him that your husband won’t let you have access to your child or the family home. That is not OK.
This is part of his CO’s job... they unf*ck messes like this all the time. There are always personal, domestic, and legal issues going on with any given number of men pretty much constantly. Don’t worry about if it’s appropriate. It’s appropriate if he’s escalating to this level. He needs help. What if he bails, goes AWOL, takes your son and runs?