You talkin' about Brendan Leipsic? Yeah, someone I know who works in hockey who has had some dealings with him wasn't too surprised, just disappointed when it came out that he hadn't really grown or matured any since the last time he had any contact with him.
I think there are a far more NHL players with "character issues" than we're led to believe. And sometimes those character issues don't get in the way of their play at all. Prime example: Patrick Kane, who remains an amazing player but a rotten, horrible human being. A supreme lack of character also doesn't appear to be hampering Tony DeAngelo too badly either.
With Gunler, there are kids like that who tumble because of issues like that every year. It's up to the team to decide if that kid is worth the risk. I won't get mad if the Avs decide not to do it (again, Avs took two kids with "red flags" in Stewart and Wolski, and they didn't pan out for the Avs despite amazing talent) but I won't blame them if they want to try and make him into a pro player.