Usher’s ex-wife has accused the singer of feigning grief over the sudden death of her son in a bid to win sympathy in their bitter custody battle. Tameka Foster slams the star in newly-filed court documents, claiming he visited his former stepson, Kile Glover, in hospital only once before the 11-year-old was taken off life support. According to TMZ.com, Tameka is asking the judge to deny her ex’s request to delay their next custody hearing, claiming he is only pretending to need the extra time to mourn Kile’s death.