By the way, for those of you who are wondering, Vladek's train of thought is as follows:
This agent, Ironsides, will most likely inform her superior, who will share with Jonna, the fact that they owe the success of their infiltration operation to Vladek (and if not, he can always tell her himself). Vladek may consider Mattias to be beyond reasoning at this point, but he still hasn't ruled out the idea of negotiation with the Lady Jonna over the Morcian throne, and them owing their success to Vladek may be a key factor he can remind them of during discussion...