Why Rashid was dismissed by Muhammad bin Rashid as crown prince

"It’s perhaps his love of maintaining an athletic physique, and the rumored steroid addiction that’s resulted from it, that was the root cause of the most damning allegation yet made against His Highness, which supposedly resulted in his father finally deciding once and for all to settle the succession on Prince Hamdan, and ban Rashid from ever playing a role in Dubai’s government. According to a confidential 2008 U.S. diplomatic cable authored by David Williams, the acting U.S. consul general in Dubai at the time, entitled Dubai Designates Crown Prince and Deputy Ruler, and subsequently published on Wikileaks, it was widely rumored at the time that Hamdan was designated Crown Prince that Rashid, perhaps in a steroid induced rage, murdered an assistant in his father’s “office.” Which of the many offices of the King the assistant was done away with in, or whether or not the assistant worked for Rashid or his father, or even the gender of the assistant, and the circumstances of the alleged crime, are all unspecified in the report. While an Arab prince murdering a servant is hardly a novel crime, either in the Middle East or elsewhere, the public nature of this rumored incident, and the fact that it would’ve been impossible to hide from Sheikh Mohammed’s gossipy subjects, whose image of him as their ultimate benefactor he definitely values, certainly would’ve been enough to force the King’s hand and prevent him from leaving his throne to his unstable oldest son." (thanks Yusuf)