Edit: second weird thing to happen, somehow spoilers has been turned on.
Jsid' s team got dropped from my nfl league, neither he or I did it.

On spoilers, it's possible you weren't logged in originally for some reason.

Jsid shows that he hadn't logged in to the league for a while and so was removed by the system for inactivity. I'm thinking the threshold is 21 days which kind of surprises me, but it is on a per-league basis so if he just hadn't logged in to that league in that time (or somehow was not logged in when he went there) that would be why he was removed.

Is there an option where the league owner can get a heads up prior to the team being defaulted?

To piggyback .. is there a way to show on an owners card their last "League Login"?