Tameka Foster to Usher: Sham Artist! » Gossip - Kile Glover, the 11-year old son of Tameka Foster and stepson of music superstar Usher, was taken off life support and passed away on July 21, days after his inner tube was struck by a jet ski.

You'd think such a tragedy would bring the feuding exes together - but, sadly, you'd be mistaken.

Despite Usher reportedly spending a lot of time with Tameka during her time of need, and despite his request to delay the pair's next child custody hearing out of respect for the tragedy, Foster has fired back in a new legal document, accusing Usher of being a selfish sham artist.

Foster alleges that Usher is simply afraid that no judge would rule against a grieving mother and is delaying the process out of his own self interests. He's worried about her "stress" levels, as he claims?

HA, Foster writes, that is "BOGUS."

She even says Usher made no effort to be there for Glover in his final days, visiting him just once overall in the hospital and Tweeting to followers to "please pray" for his stepchild… yet refusing to do so himself.

In her documents, Foster says Usher's desire to postpone the hearing is "simply a transparent sham. She asks the judge to shoot it down and force the singer to appear on the next scheduled court date, August 13.

We'll keep readers apprised of the next step in what is becoming a depressing, ugly battle, and all with two little kids in the middle.

[Photo: WENN.com]