Six weeks ago, Buffalo Bills coach Doug Marrone expressed confidence that defensive tackle Marcell Dareus had straightened himself out.

Marrone benched Dareus for the first quarter of the penultimate game after arriving late to team meetings. The very next day, Dareus showed up late again and got benched for the first half of the season finale.

"I'm sure that he was disappointed. We both were," Marrone told me at the NFL's annual owners meetings in Orlando, Fla. "We talked about it.

"But it's a situation that happens, and I don't see it happening again. You make mistakes, and you just move on from it. He's going to be fine. He really is."

Dareus was arrested Monday on felony charges for possessing a controlled substance and drug paraphernalia in Alabama. A source, speaking on the condition of anonymity, told The Buffalo News the substance was synthetic marijuana, which can avoid detection in a drug test.

That slapping noise you heard echoing around Western New York was from a bunch of palms striking foreheads at One Bills Drive.

Two sources informed me today the team has been concerned about Dareus' marijuana usage since Chan Gailey was coach, but nobody has been able to convince Dareus to stop getting high.

Monday's arrest creates a difficult situation for the Bills, a team that has extended redemptive chances to several players in the past year.

The NFL could ease the Bills' discipline burden by stepping in with a four-game suspension, but Dareus doesn't seem to learn easily or care much.