Oh, MG! You haven't lost your recovery. In fact I think you brought this thread back to where it started. Tough love is another way of trying to control an addict's using. It's okay if you want to give him a place to sleep... denying yourself that because making him be homeless might make him clean up... well you said it yourself. Tough love is no miracle cure.
As to getting mad at him... it's not as deep or as long an anger any more, is it? Even people who are not codependent get mad. It's okay, too.
And this is just my opinion, but if you can't afford to get the alarm, then you can't afford to pay his rent somewhere.
And Josie, you reminded me of the first time I got Dino out of jail. I was so horrified it nearly paralyzed me. That evolved into joking with the cat that I was "fixin' to spring Pappy from the pokey agin'."