...I would say chimney and or stem up the slot until you can latch onto the top of the ridge (shoulder) on the right side and shift over - then Stick It. Hard to say what would happen if someone tries to stay in the slot
As you've seen, I don't often give information on how to climb a route in its description. I don't in this description either.
Also, the risk of anyone trying to stay in that slot is infinitesimal. To start with, no-one is ever (EVER!!) going to repeat those routes. If (IF!!) any fanatic nut-case did go out there, they, like each of the four of us, will find that there's only one natural way to climb that route. No-one that knows climbing well enough to go there is going to try to stay in the slot.