I think Iverson told his mother off on court a few years back when she was butting to a player altercation on the floor but not sure about if he used cursed words or not.
However if any player curses at a fan, they have been fined in the past, but wondering if they waited for that fan to complain first. I am not sure Ms. James will complain publicly, but will probably yelled him later that night....while asking for money....

lucky it wasn't mothers day.
If anything Ms. James should file charges that KG molested her. Did you see how he put his arm around her like she was his girl..
YouTube - Lebron James tells Mom to Sit Down After foul (5.12.08)