Ok, what if- after defeating the guards, the party face starts questioning the surviving wounded guard. (End of combat encounter start of social encounter maybe?)
While the face does most of the talking the hacker does the following:
Hack, hack,hack hack spend 4 edge on healing a physical dmg. Log off/log on.
Hack, hack, hack ..... until all his dmg is gone. Then he start to share the edge with his teammates, so they also can heal ( all the grunts had lowlight vision, so the team got pretty badly wounded). Once in a while the hacker will engage lightly in the social encounter.
After 6 minutes the face is done talking with the surviving goon ( that dude is pretty shaking, he just witnessed a bunch of runners regenerate in front of him).
Ok, thats the most extreme scenario I can come up with I think.