I think the Marbits and Elves are going to jump ship, possibly Foxmud and Hobbittm will go too. Although I doubt Unaroyal or Sofa King will be overly offended. That leaves about 5700-6000 units on Ansom's side but Ansom should still have more than enough forces to take GK.

Jillian looked pretty shocked at Ansom, even Wienber was surprised it seemed. It appears Vinny realized Ansom's mistake already, and the generic mook seems surprised too. Regardless of what happens the fallout is sure to be fun.

Parson had no way of knowing whether any of Ansom's allies would be around to witness his reaction, so any benefit from that part of it would be a bonus. He might guess that there's be some tension between Ansom and anybody who might try to talk him out of doing something stupid as a result of the goading, though.
Although they need to make plans, especially after the new info in the tunnels, so it is a reasonable guess that he probably wasn't alone.