TSCC is hardly dead. The DVR numbers are superb, and when those are factored in (along with web views), its viewership is very similar to what it was before the move. That's not as good as what Fox wants, I'm sure, but what do they expect? It's not like TSCC's viewerbase has nothing better to do on Fridays. The one thing the Friday move has proven, at least, is that this show has a VERY loyal userbase, even if they can't always be there to watch TV live.
Anyway, they're supposed to make a decision about it in May. If the season finale gets really good numbers, then I can see Fox renewing it for a third season (and preferably out of the time slot of death). However, if Fox drops it it's not the end of the world. Warner Bros. could very plausibly move the show to their own CW network, or license it to SyFy (although I'd expect to see some budget cuts, like moving production to Vancouver).
The CW would probably be about as good of a fit for the show as SyFy would be, although for slightly different reasons. SyFy would be a lock for the scifi geek viewers of the show, but the CW has its advantages too since a lot of women watch it, and TSCC has a lot of female fans due to its strong female leads. I think either network would be a fine choice, and really, if I can just get TSCC season 3 I'm happy!