Clearly, Usher has other things on his mind other than being a decent family man. After adding "The Voice" to his repertoire, his ex-wife should at least get more custody of their son if not full custody altogether. The rapper probably doesn't want the distraction of a child around as he performs and becomes part of a posse for UFC 168.
Usher was not even at home while this happened. Although it is a terrible story, Usher should not be at blame. Usher's Aunt was watching the child swim while Usher was away. The blame is in the wrong place. If anything, the aunt she have to be supervised for no watching a child.