After rewatch, what stops Pitou from just grabbing Komugi and running?

Pitou’s main objective during the palace raid was getting Komugi away from danger (Gon specifically) and back to Meruem (knows where he is too). Right after the surgery is finished, why not snatch Komugi and run as fast as possible? Pitou is definitely faster than anyone presently there. And I know Pitou wants to keep the promise, but I feel like that should be a second priority.