Interesting. But yeah, it is possible to have a visit too early. Tennessee game makes for a dangerously tempting game to schedule visits, as they are in conference, a rival team, and are ranked (in my dynasty). however, with your problem, I bet it COULD be a team using an unlock and a visit in the same week. I actually did that in my online dynasty against a user team (who the player had #1). Needless to say, he wasn't happy to see the results.