Ok, so using a hydraulic press, despite being glued in with Loctite 609, I was able to push the crank back out of the cases without any real abuse. In fact, the Loctite didn't seem to make much of a difference aside from that first initial "pop". The mains and case halves appear to have survived the ordeal undamaged. I suppose they're rated for several thousand lbs of dynamic force so a mere portion of shouldn't be a big deal, even axially, I guess.
Needless to say, I won't be using freeze/heat again... I never liked it to begin with. The principle is sound and it works fine when done right, but if anything hangs up or hesitates, you're screwed. It's strange, since the crank virtually fell right through the bearing and went "clunk" right up against the bearing, so I figured we were golden.
The crank is another matter. I put it in the lathe at work, and using my best Swiss made indicator, I gently drove a wedge between the webs, tapped with a mallet, and squeezed to try to get the crank straight again, but wasn't able to do the job satisfactorily. I took it down to Q&E down in Anaheim to see if they could get it straightened out. Worse case scenario, the crank cannot be straightened, and I'll have to buy a new crank assembly from Kawasaki. I'm debating on whether I'd want to have it balanced and trued on top of it... Let's hope it doesn't come to that.