Perry Berezan said in one article Hartley's not very kind to his players either.
Someone else talking about Hartley said that Hartley was the only coach who he'd seen players specifically add to their no trade clause, because they didn't want to play for him that badly.
Here's the one with Berezan talking about what he saw from him, I can't find the other article though.
http://www.cbc.ca/news/canada/calgar...tley-1.3564964