The guard just outside gives his head a shake, and walks over. "Hey, hey, no need for that, I'll let you out. Moradin's Groin Beard!"
He walks past the outer door, closing it behind him, then unlocks the inner door. It's at this point that he notices that there is some kind of game of Knock Out going on.
"Elminster's balls!" He yells, drawing his truncheon.
You can now enter the inner lock area, although the outer door is probably locked now. Anyone passing by Jhishma will have to contend with the remaining to prisoners unless you use the Disengage action. That would be Nar, Kelvin, and Baroril.