The nasty custody battle between Usher Raymond and his ex-wife Tameka Foster Glover Raymond resumed in Fulton County Court today (May 20, 2012).

You may recall Tameka hit the stand a few weeks ago and admitted to stating she’d “F*ck up” Usher and his new boo during a heated argument and recently it was revealed that it was Usher who initiated the suit to obtain full custody of the couple’s two young sons, Usher V and Naviyd.

Earlier today it was Usher’s turn to make an appearance on the stand after performing just last night at the Billboard Music Awards.

[READ: Hot or Not? Usher Raymond’s Baby Blue Billboard Suit + “Scream” Performance – PHOTOS/VIDEO]

While he changed his baby blue suit for a more conservative dark gray, the Grammy award-winning singer went in on his ex-wife, accusing her of viciously assaulting former side chick turnt main chick turnt manager, Grace Miguel.

Watch exclusive video of Usher on the stand below… Continue Reading…