Apparently he's not the thought sending type of mentalist.

> what does a consulting mentalist do?

At a guess, they consult to stage performers rather than performing on stage themselves.

Pretty much yes. Usually people contact me because they want to do a particular demonstration on stage and i find a way to do it given their skillet, constraints and theme. But it can also be building a full show around a theme or helping someone track older references on a subject they are researching.