Can you really call a fair catch on an onside kick? I don't think that makes any sense. I didn't even think it looked like a fair catch signal.
I may be reaching here but the NFL has tried to clean up the ref crud a bit this offseason. Maybe, Triplett was playing by his normal corrupt rules and figured like in the past his crew would go along. Maybe because of offseason training they grew some balls and are now not afraid to questions his calls?
I thought Shermans first uncalled interference was blatant. That should have put the Rams at the goal line.