What will be interesting to watch will be the reaction of the national media if Wisconsin plays on the 7th, after still piling up positive cases today. And players that tested positive are allowed to play without sitting for 21 days, because the Big Ten changes the rule.
If that happens, I think that ESPN will hammer the Big Ten and Wisconsin pretty good on Gameday.
If the Big Ten states the Wisconsin-Purdue game will be played, then I'd put the chances that Northwestern suddenly has an outbreak announced on Nov 1 requiring cancellation of the game on the 7th at 50-50. Not because those teams are necessarily scared to play Nebraska, but because of the Big Ten being miffed at Nebraska trying to still schedule an OOC game. And releasing an announcement that had (mild) criticism of the Big Ten.
If that happens, the national media mockery will go up even more. I would hope the Big Ten will not try to pull something like that, but at this point its hard not to become more concerned about how the Big Ten treats Nebraska. It all depends on how the Big Ten treats the Wisconsin players that tested positive. If the Big Ten says they won't play until the 14th or 21st, then this situation cools down. If on the other hand, they let them play (particularly if the covid+ players play), then it shows they have two sets of rules.
None of this means you immediately run off to another conference, but it does start to add some uncertainty. The academic side, the additional research money, etc. will still hold a lot of weight.