Courtesy CBSnews.com

Ricky Williams is still smoking pot. Ricky Williams has social anxiety disorder. Ricky Williams has a problem with lying.

All of these may or may not be completely accurate, depending upon which source you read, but for the Miami Dolphins, the question is not what is most accurate, it's which is the biggest problem Miami must consider before accepting Williams into the Dolphins backfield and lockerroom.

Less than a month ago, Williams was talking like he couldn't wait to get back to the NFL and to the Dolphins. He was teaching yoga classes in the Sierra mountains.

And he had most definitely given up marijuana. At least, this was his claim. Of course, a recent NFL drug test shows something completely different.

Now, after a positive marijuana test, Ricky Williams' future in professional football is once again in doubt. The earliest he can return is September, when Miami's running back situation should be settled.

Once again, the Dolphins will have to ask themselves if they want a man with a long history of drug abuse, a football player in the public eye who gets the shakes when he's near the public, and a man who can't seem to get the story straight on his own personal shortcomings.