Oh definitely; in his memoir he says of himself as a schoolboy "..I possessed a somewhat unbridled tongue combined with an uncomfortable knack of finding out people's weak spots. This does not make for popularity, and should be held in check by those not physically strong enough to protect themselves." But he seems to have turned this failure into a more positive aspect later by using it to make an impression on those he wanted to remember meeting him (like anyone would forget him!). I think he was a natural but unconscious "cold reader" who could tell a lot about a person by observing them; this may have led to him thinking he was psychic. http://en.wikipedia.org/wiki/Cold_reading
Oh, I have to take this moment to complain about not being able to find comprehensive information about Ernest - there's not even a complete listing of his stage work anywhere on the internet that I can find. I thought I had found one, but after poking around a bit I realized it is missing a huge number of productions. He was one hard-working guy! I can only assemble a complete list by going through old issues of "The London Stage" magazine which fortunately are mostly digitized. Without a list, I can't look for more info. I like looking at anecdotes and pictures, but I don't especially enjoy poring over pages and pages of tiny print. Ok, stopping complaining now! Researching from the comfort of home beats the old days of going to libraries and looking at microfilms of old newspapers!