LogFAQs > #971938907

The enemy team has become aware of Samus' presence and all that she is capable of, and succumbed to fear of the foe they're now tasked with facing. They will prioritize defeating her above all else, making their battle plan revolve around her defeat and abandoning other plans to ensure her demise.

If it was succumbed to rage, I might be able to interpret that as Mega Man teleporting forward. Rage inspires aggression. Fear inspires caution, and Mega Man isn't going to leave behind his team if the optimal way to achieve Plan: Kill Samus is to stick with his team and attack her as a group.