Why wouldnt I be?
Sounds like a post htat you would make fun of. then again idk?
Anyways--
If I were you , I would lower my expectations and give him his space, but not cut him off completely. i.e., keep the lines of communication open, so he knows you are there. Maybe he is going through alot of stuff (something must have happened that he has to report every single hour, or had to move away).
When u think he sounded sarcastic, maybe he was just frustrated at something going on in his life--it could possibly be that he didn't mean it in that way.
Then again you know about him better than us, u know his personality and the history you two have..