You know, Em, there is something between booting him entirely and getting back into a R with him. That in-between is called "proving himself". Don't date him, don't sleep with him, don't plan your life around anyone but YOU. But go ahead and let him show you what he can do. Give it a year. He has to start over at the very very beginning. He has to prove to you his changes are REAL, then he has to interest you in him like any other new guy, then maybe maybe you would date him, etc. etc.

And if you don't want him back, don't bother. You're within your rights to be done - so if that feels right to you, then fine.

Does he have any INSIGHT into why he did all this? Does he understand anything? Or is he just running from his new responsibilities?