[Woolly]

Some of these situations could be mitigated by giving the refs some way to signal to a team causing another robot to nearly tip that from this point forward them causing a tip WILL be a red card for sure.

For example, say team 251 is on the red alliance, and team 1117 is on the blue alliance. Team 251 is playing defense on 1117, and pushes 1117 in such a way that it causes team 1117's robot to at least appear to almost tip. The referee points with a red flag at 251 and makes some kind of clear gesture signaling that it should be obvious that pushing harder will cause 1117 to flip, and that if 251 causes 1117 to flip, they will receive a red card. 251 is still allowed to play tough defense, however if 1117 ends up wrong-way up due to contact engaged by 251, 251 will receive a red card.