I've not seen one but does it happen to have a chrome or plastic piece at the bottom of the knob? If so, you may need to pop that down with a screwdriver to get to the release tabs on the knob. Oh, and please check into our newbie section.
the FSM states to drill a hole in the upper half of the shifter ball for removal, DO NOT do this! You can separate the upper half of the knob for removal by using a sturdy tool to gently pry up all the way around the upper half of the shifter knob breaking the little bit of adhesive and popping it from the rubber/foam base it is mounted to.
Hope this info helps everyone.
Credit goes to brr from another forum http://www.blackroseracing.net/phpbb/viewtopic.php?f=24&t=24