While the reaction is a bit sudden and out of the blue - I can understand why Aldo would be frustrated. It's kinda disrespectful to the champ and the division to have him fighting LWs time and time again. And what exactly did Pettis do to earn the shot? And what did Edgar do? The UFC need to stop this rubbish match-making or their champions are going to get frustrated and feel disrespected, and rightfully so.
Dana messed up here, and he needs to be a man about it and not take the "Do as I say or else..." route, because if anyone deserves his respect - it's Aldo.