Aaron Boone of the Yankees received a one-game suspension for his recent conduct toward umpires. I suspect the spit got him:

Thursday night, the manager was ejected for, among other things, appearing to spit on home plate umpire Edwin Moscoso, who told Boone after their nose-to-nose argument, “You spit in my face.”

SportingNews.com

Manager used to have more opportunities to use ejection arguments to motivate their players. With replay, all that’s left is arguing balls and strikes. Boone appears to be finding plenty of instances to take it to the umps.