I awoke early this morning, donned multiple layers, and went on my rescue mission to get Pinky, my beloved bike, back.
I am happy to report that after a ride uptown in 8 degree weather with slush still on the streets, she is indeed home safely, only slightly worse for wear.
Joe, the building manager at 145 W57th, aka my nemesis, is on vacation in Florida, so there was no confrontation. I'd like those guys to pay to replace my u-lock, but I think that's not going to be easy. And probably not worth the trouble.
Anyway, for those of you looking for closure, I think this is as close as we shall get. Again, thanks for all of the interest!