This interview with Matt Pegg isn't particularly flattering:
http://www.procolharum.com/prog2.htmI'd imagine Ian's role as the bandleader and manager (Isn't all done in house these days? I've seen interviews where he talks about using cheap flights to keep costs and ticket prices down) is far more stressful than just being a salaried musician. I'd expect a certain disconnect between him and the others.