Santino won't even make it into The Chamber

If anything I see something happening like Santino is on his way towards the Chamber and is about to get into the match-up when someone attacks Santino from behind rendering Santino unable to compete, similar to when Edge attacked Kofi Kingston when he was on his way to compete in the RAW Chamber, Edge took his place, I see something happening like that

Or someone will attack Santino backstage rendering him unable to compete

And then there will be a mystery entrant for the Elimination Chamber that way

Either way I see someone getting to Santino either way, and as for who the person who I think it will be...

It will either be Alberto Del Rio making his return tonight, Mark Henry, or Christian making his long awaited return and taking Santino's spot

Christian attacks Santino, takes his spot, wins the title.

Bet on it.