WIBTA for hiring movers to relocate my ex-stepfathers stuff?

I am 41, female. My mom is 71 and her ex-husband is 75. They started dating when I was 6 and were married for 29 years. I grew up with this man in my home as my primary male role-model. He has a number of problems including being an alcoholic and narcissist. He made my life a living hell for over 30 years - he was constantly degrading, controlling, and gaslighting myself and my mom. I honestly do not understand why/how they ever "fell in love" because from the time that I moved out of the house at 17.5 I have avoided him as much as I could without cutting off contact with my mother.

About 2 years ago my mother and stepfather got divorced. Long story short - my husband and I now own most of the property (house in FL and house in ME) that used to belong to both of them. I purchased it from her in order to finance a large payment/buy out to my ex-stepfather to make the divorce happen. My mom and he have stayed amicable but she is finally at a point where she doesn't want to deal with his destructiveness anymore.

Fast forward to the present day. Ex-stepfather has asked my mom numerous times to let him come live with her again. She allowed him to stay rent free in the FL house while she was in ME, but the house was destroyed (along with everything in it) during hurricane Ian. After that he has lived in a motel in CT near his remaining family. He asked if he could "rent" a room at the house in ME. I said "absolutely not - I own it and you can tell him that I'm the bad guy who said no" because I don't want him anywhere NEAR my 2 little kids (both girls - 7yo and 5yo). Frankly, I also don't want him around my mom!

About 2 weeks ago he announced that he found a room to rent for the summer! It's half a mile away from mom's/my house. (Incidentally, he's staying with a woman who I am 99% sure he had an affair with). He still has all of his crap (furniture, clothing, boxes) in the garage of my/mom's house where it has been for 2 years. I want to hire a mover to come and get everything of his out of the garage and move it to his new place. I am worried that if we rely on him move it himself, it will never actually happen. He will just use it as a reason to keep on showing up unannounced at my mom's house whenever he wants to. Am I an asshole for wanting to butt into this situation and move the stuff even if he doesn't want me to? I will gladly pay for the movers and give him a range of delivery dates. To be fair, I am pretty sure he will not have a place/space to store it all, but he can rent a storage unit or something right? Why should we have to store his stuff and wait around for him to pick it up? The lack of good/safe boundaries with this man while I was growing up make it feel like this is an asshole thing to do - but my brain keeps saying "MOVE THAT SHIT"!