Stunned and confused. Yep. That's going to be his mode for many months to come. If you stand back and wait this out... keep the door opened only a wee few inches,... but don't ALLOW him to get past it until his brain re-engages. He'll probably try everything he can to come to you for a respite in order to go back and deal with his mess. DON'T let him. Let him wallow up to his neck in the REALITY he's made. That... oddly enough, I think, is your best chance to get him back if that's what you want.
You said... false hope. I happen to think you're still in the game. He's not dumped you outright. (mine did for a week) He's still clinging to you to keep from drowning in his new messy reality. My advice, based on my experience: be nice, don't let his drama become your drama... just be very firm that HE has to fix his mess. HE has to get his head on straight. HE has to decide once and for all where he wants to be. Only reward "good behavior" towards you.
I kept mine on the phone for the final four months before we reconciled. Right now you have the capacity to TAKE the control you'll need to wade through this, if you choose to do so. He'll probably even be sulky or mad that you aren't going to cooperate with his spin cycle. He wants you to "be there" so that he can stay in that spin cycle without making a firm decision. Try not to play that game. The hardest thing you'll have to do right now... is REJECT him and his want to drag you into the spin cycle. He'll probably balk initially... might even tell you he doesn't want to see you anymore. Uhm... like my C said... He'll be back. I didn't believe it then, but it made sense afterward. You are his FLOATING device. He'll reach again for it.