I was under the impression that the Caps had several well rated goalies in their system, any one of which could get them to the end of the season. I would then expect that they could sign a UFA in the offseason, or even re-sign Kolzig when he becomes a UFA.
I had also read elsewhere that Buffalo might be interested in an experienced backup, as Biron, Noronen and Miller are all young players. That's what made me think Snow might be of interest to them, although I'm sure Kolzig could interest them under the same circumstances.
I would actually rather give up Parrish in a trade than Weinhandl, mostly based on salaries. My inclusion of Hamrlik is also somewhat based on salary constraints for the Isles.
Beyond even these proposed moves, I still think Milbury needs to deal for more depth on both forward and defense. I wonder what picks we could exchange with the Pens to rent Eastwood and Bergevin. Or maybe an additional pick to the Caps for Berry.