As an Administrative Law Judge and arbitrator, I have felt pressures to conform to the needs or desires of the executive or other party employing me. I have written about this before, in the context of reminding folks that the judiciary is not so special in this regard. See A
Pressured Judiciary--Fact of Life and Cause for Alarm? Indeed, it is likely that the tendency to exert pressure--even if inadvertently and/or subtly--is far greater in the administrative or arbitration contexts, where the adjudicatory decision maker is more likely to work closely and regularly with party representatives.
That is not to say there is something nefarious is going on. It could be as simple as having a casual conversation about procedure that gently blends into due process questions,