Always 2 sides to every story.
However, IMO, Couture doesn't seem grateful for what the UFC have done for him. They gave him multiple title shots, across 2 divisions. Branded him, made him money. UFC would have loved to make him a company man, but instead Couture pulls a dick move and goes with the competitor.
Of course, I dont know all the details, but this kinda shit is def shady from both sides. Couture seems more of a "me" guy than "team" guy.