Continuity definitely was a factor, but the other huge factor was simply that better players were plugged in who could actually do their jobs somewhat adequately so other guys on the OL didn't have to pick up the slack. Bell and Chandler were awful, it's that simple.
I don't know how you equate sitting a clearly poorly performing player as "making changes just for the sake of making changes". With that mindset Byron Bell would still be here, and Deangelo Williams would still be here starting over Jonathan Stewart.
Because the backup could be worse than the poorly performing player. So there might be no good reason to make that change.
I can totally agree with you about the Stewart/Deangelo decision. But as for the other positions, we didnt have anyone on the roster at the time that clearly deserved to be a starter. That is not blind loyalty.