[MikeDubreuil]

Here's an interesting Q/A about back bots and disabled robots:

Question:
If a team's robot is disabled mid-match, are they required to maintain a back-bot?

Answer:
If one of the alliance robots is disabled during the match, then it is up to the two remaining alliance members to either bocome the backbot, or move the disabled robot into an appropriate position such that it can be the backbot.

http://forums.usfirst.org/showthread.php?t=431