Last band I tried out with (invite from previous guitarist) had someone that sounded similar - the (other) guitarist post first full rehearsal turned into the "great I am"... posted a note on "his site" about how much he liked my fretless Jazz sound and how much he disliked the "harshness" of the PC, so I told him that I think I know what sounds right by now and told him where to stick his site, his band, and most importantly, his attitude...
There were other arrogance issues with him too... how about this for one... "this is a band and we all will be involved in making the choices" - gave us a list of prefered band names and asked for other choices, came back on line 1/2 day later same day and said let him know what we would use (of his) by 1700, that day, then chose his own prefered one without any input from any of the others, created the website, job done...
Jerk...
