Hi blue. Well my immediate reaction is the same as what Aries said, except I was going to say bull**** instead.
This is absolutely him being totally selfish. He's probably upset, he lost his gf, his Mom flushed his pills and he broke his hand, who, besides you, would listen to that sad tale? Probably no one.
So he can't un-break his hand, however he can attempt to get you back and get some more pills. People who are serious about quitting drugs do not go and buy them. He is just saying what what he knows you want and may well be what he wants too - but he is no where near that.
If there is any hope of a reconciliation, if in fact you are interested in that at all, it would be wise to wait until he has had at least a year of sobriety and treatment before that.
You are wise, I know you know this. It can be tempting but just know you will be going back to exactly what you left.