NJ.com has a very long article about how Rutgers joined. The process was going on in secret for years, starting all the way back in 1990. It's worth a read if you're a realignment nerd like me.
https://www.nj.com/rutgersfootball/2022/11/how-rutgers-crashed-the-big-t...
NJ.com is paywalled, but is available through the Columbus library. I think this link:
https://infoweb-newsbank-com.webproxy3.columbuslibrary.org/apps/news/doc...
will work if you have a card.