http://wiki.answers.com/Q/Was_Michael_Jackson_loyal_to_bill_bray
...Michael did issue a public statement when Bray died in 2005 saying that he was saddened by the death and that Bill would always have a special place in his heart. Sources behind the scenes said that when told of Bray's death, Michael became "hysterical". This seems a bit strange since Bray was in declining health for years and Michael MUST have known about it. Maybe the guilt that he never tried to contact Bray just overwhelmed Michael in that moment?
With both Bill Bray AND Michael now gone, it's possible that someone in the know will put out the real story of what happened between them. I guess we'll have to wait and see.