Perhaps, but, the way that Mario seemed to take offence at the possibility of Balsillie moving the team, when he's now willing to do the same, seems a little hypocritical to me.
Mind you, I think Mario deserves leeway in this whole thing, simply because he's done so much for the franchise. He's saved the team on multiple occassions, and, I think that he figures if anyone is going to profit from moving that team, it deserves to be him. In a philosophical sense, I understand that, and sympathize with him. However, when the agreement was made with Balsillie to sell the team, he undertook the risks of the team at that time. It seemed to be made with the agreement that he'd keep the team with a new, fully paid arena, but after that, it was his discretion on what to do with it. If that's the case, then, Mario gave up his right to profit from the team moving. In reality, that prospect was reflected in the $175M sale price that Balsillie did pay.
All of the above is based on my interpretation of what has happened based on limited information, so, there could be a whole other situation here we don't know about. But, that's how I see it.