So what I think I managed to figure out is pick up the "promising last attempt" from Part 4 of the R2 video and maybe stone the clone stacker and use the shimmy jump to land on top of the stoner and then platform across to reach the midair platform. At this point, I have two jumpers, two fencers, and a cloner left and an uncollected glider which will be collected by the crowd. Is this at least in the right direction?
Certainly the biggest problem is if using the stoner, then the lemming that hits the top button above the exit has to survive. With the skills I have left described above, I can't shake the feeling that there isn't a way to save him, at least not with the skills I have remaining. The only way to possibly make him turn around is to fence and then a cancelling skill to push the button. I'm wondering if this part might be quite precise?
The other possibility is that the stoner might be a red herring, but I doubt it