Really – they like his “burst.”  From the Orlando Sentinel…

Oh, and his burst is back. Miami Dolphins boss Bill Parcells noticed it last week at practice. So did General Manager Jeff Ireland. Coach Tony Sparano saw it, too.

When Ricky ran, he looked faster. More explosive. Better.

“I saw a little bit of an extra gear,” Sparano said. “Jeff, Bill — they’re saying the same thing. It was a reason why we wanted to get Ricky a little more involved.”

Given a more prominent role Sunday, Williams had a breakaway run and breakout game. He scored on a 51-yard sprint, reached the 100-yard rushing mark for the first time since 2005 and helped the Dolphins win their third game in a row by beating Seattle 21-19. (Source)

Just think how great he could have been if he had made some better choices.  What a waste.