I place Josh as one of the more volatile, high maintenance streamers in the parks these days, by which I mean Disney needs to keep security aware of who he is and what his personality is like. Eventually Josh will cross the wrong person on the wrong day, a fight will ensue and someone will be taken away to the security office. It's not a matter of "if" but rather of "when".
His behavior reminds me of bi-polar folk who have good and bad days. Sort of Dr. Jekyll and Mr Hyde style. His swings, seem to be connected to the school year, but not always.