Your both absolutely right, why would a competent wizard find himself in a position that he couldn’t talk/magic his way out of. I spent the better part of the morning thinking about it, a number of ideas came up but only one I had maintains the majority of the story. This idea in fact being that the investors were prepared for Donovan at the signing. The awkwardness and pressure was not natural in nature, it twisted his perceptions and limited his ability to think logically through the situation. (The room its self could be a whole new submission now that I’m thinking about it.) Seeing that all business was conducted in the room Donovan fell to its powers a number of times.
Thanks for the advice.