I thought that the purpose of Power Armor being powered was that it mostly held itself up
Also, V, I didn't know you thought we were cybernetically enhanced - in case Roku didn't shove the fact into the open enough, we are NOT cybernetically enhanced (unless specifically stated in a character's bio, along with a suitable reason), we're heavily genetically engineered individuals bred for war and teamwork. Some of us like Jack may not like our allies or our makers, but our crew is tight-knit, simply because we have to be. Relations between any two Juggernauts is a cold friendship at worst (grudges, conflicting ideologies, etc all come to play, but when two people rely on each other for survival, if you're not friends, you're both dead)
So, all this considered, an EMP screws with the armor, Magnus and Hardsuit users extract the weaker Juggernauts, they fight it out like regular soldiers, trying to dodge every bullet if they have to, or take cover.
But again, Roku, I thought the entire point of Power Armor being powered was that it mostly held itself up - motion rotors in the joints and stuff to assist movement, which is why power armor requires training and why Scarlet can't jump.