Kyle Orton has gone down the last two seasons.  While there was virtually no time (or little time) lost during his injuries..  IF he goes down again, who replaces him?

I understand that Tebow is #3 on the roster, and Quinn is #2.  By this standpoint, Quinn would replace Orton, while Tebow would assume the #2 spot on the roster.  And it would be safe to say that this would happen during the game that Orton did go down. 

However if God forbid, it was a long term injury, would they keep it the same or put Tebow in certain packages and leave Quinn in for the rest? 

Would they revamp the depth chart and send Tebow out there to get some on the field training this season?