All - Our team has experienced first hand issues with bad calls and the need to keep the "show" moving over-riding what should be replays in the name of fairness. This is of particular importance in the semi-finals and finals. A miss-call in the qualification rounds affect teams much less since a) there are other qualification rounds b) scouting prevents a single bad game from affecting the ultimate outcome of the competition.
A delay of 5 min to re-run a match is little price to pay for a fair competition.
With all this said, I viewed the recorded video stream from FIRST. See:
http://livestream.com/accounts/13199388/FTC-Edison
(Video labeled Edison Championship 4/25/15)
Time stamp: 02:04:45ish.
This is shot from a different perspective. You can see 4251 striking the back of the 5026 just prior to the tube falling. Do I believe that this was the cause of the tub falling? NO- hard to believe that there was enough momentum exchange between the two bots. However, I do see why the ref's made the call they did.