you do nothing over it.
You, your university, and your team is getting roosted about it and the pathetic letter you made him publish which was worthless.
Yet you came out and did some kind of video about rival right. Your pathetic coach doesn't even have the guts to say the schools name, let alone call it a rivalry yet they brought all of the kids they are recruiting to show them how big of a deal it is for them.
So many different messages from the team about it is or isn't a rivalry game. Just be an adult and call it what it is.
Even after you playing in the PAC the whole NCAA knows who your rival is. Even your so-called NC, wins in the Rose bowl couldn't get you to the next level of having BYU your rival.