Texas knew they wouldn't be able to keep the Longhorn network as it is if they joined the Pac 12. They felt they had a better chance of that in the ACC. There were numerous articles coming out of Texas preferring the ACC.

ND is basically the same with their NBC deal, I also read where someone from ND was quoted saying if they are forced to join a conference, the ACC would be their first choice.

So I would imagine their is at least a small chance of ND joining the ACC. Texas, however, will probably be staying put.