You can't even make this up if you wanted to.  49ers fullback Bruce Miller decided to that Labor Day was a good day to punch an old man, so the 49ers decided to release him, via ESPN:

According to San Francisco Sheriff's Department holding records, Miller was arrested at 11:25 am PT Monday and taken to San Francisco County Jail. He is being held on $178,000 bond and being charged with assault with a deadly weapon (not a firearm), two counts of criminal threats, battery and elder abuse.

The police said they were called to the Marriott on Fisherman's Wharf at approximately 2:45 a.m. after Miller tried to enter a hotel room occupied by an elderly couple. The couple's 29-year-old son, staying in the next room, then told Miller he was at the wrong room. Miller, who was intoxicated at the time, attacked the son and his 70-year-old father, who came to his son's defense, police said.

I want to believe that Miller just wanted to be cut and acted out.  But given the fact that he was drunk and it was almost 3am when it all went down I'd say he's probably just an asshole.

You can't run around punching the elderly in a day and age when the fullback is almost nonexistent.  That is unless you would rather being doing something besides playing in the NFL.