Yeah, Sin Cara's injury is legit and it's just one of the many risks from wrestling a style like his. I don't think WWE are going to give up on him just yet, but it's certainly ruined their plans for the possible Wrestlemania match against Rey Mysterio (which was at a push anyway because Mysterio's injured too).
Hopefully WWE will give CM Punk a title reign that lasts more than three weeks, I'm thinking that there is a possibility that we might get a WWE Championship belt design change. WWE should have had Ryder replace Sin Cara in the elimination match, it would have appeased the MSG crowd who were pretty silent throughout it. It seems that WWE might have Henry carry the WHC through to Wrestlemania, assuming that Big Show doesn't defeat him for it at next months inevitable rematch at TLC. Imagine if they fought for the title in an actual TLC match? That would be insane and perhaps terrible, but it would give them an excuse to bring out the cool reinforced ladder again.
Speaking of Big Show, has anyone noticed how much he's improved in the last few months? It's like he's recapturing the things that made him great when he first debuted in WCW as The Giant. The flying elbow drop spot was just incredible, especially for a man of Big Show's size getting that height! You never know, he might start using the missile dropkick again!