It's not a new argument.
The argument has long been that the leak of the conversation was intentionally done to tank things before Yormark might be able to get traction working behind the scenes to get the votes. If Yormark couldn't get the votes, then the hope was nothing would've gotten out in the near-term (or in a way either party had to acknowledge the talks happened). The way it worked out, both UConn and Yormark ended up with egg on their face. The only hope of the move going through was for it to be fait accompli prior to it getting out.
Zanetto didn't do anything wrong... he was simply the tool that was used by his source to get the word out to where it would be checked and put out into the mainstream media (ESPN, local newspapers, etc). This in turn allowed both, the opposition in Connecticut (Senator Murphy, Speaker Ritter), and the Big XII media to jump out in front of Big XII boosters to get out there with their arguments against the move (the detractors, saying that the Big East was the better home; the Big XII media returning to their arguments against UConn football)