Just a quick little timesaver I found. Since that door is open anyways you only need 1 person up there and only having 1 person up there will also keep the gesture from triggering. It may be possible to make it on top of the light fixture in 1 reportal if you jump into it. Maybe jump off a crouched partner.
Lag makes p-body slam in the chair upon release in midair it seems. Couldn’t get it to work on atlas or in split screen.