This was the move Yormark was brought in to make, secure the B12 future as the P3 conference. I was expecting B12 to open the window and not wait, this is the time to talk to Fox/ESPN and get the number for additional schools to know who to offer. It also hurts the PAC10 potential deal since they no longer are the only rights on the market to "officially" negotiate.
The worst thing would have been to not open them now and see the PAC10 schools panic into signing a GOR leaving the B12 selling the current teams with out the option of adding additional late night windows out west. We'll see if we ultimately expand (likely) but having all the options to do is a better negotiation move.