I've seen a few players suspended after a blown ejection. The normal upgrade to flagrant 1 is just the fine but the upgrade to a flagrant 2 is a suspension.
a flagrant 2 doesn't mean an automatic suspension. it's an automatic ejection in-game, but the only way you'd be suspended after the fact is if you've accumulated enough flagrant points. for example, birdman has 3 flagrant points right now, so any more flagrants and he'll have an automatic suspension since the playoff limit is 4 points.