With a potential draft-day slide being greased by so-so pre-draft workouts and the inexplicable decision to lie at the Scouting Combine about whether he failed one or more drug tests while at Michigan, receiver Mario Manningham did further damage to his draft stock via a train-wreck Monday afternoon appearance on Sirius NFL Radio.

Manningham was interviewed by Adam Schein and Tim Hasselback on the Afternoon Blitz.  To put it mildly, it did not go well.

A trusted media source who heard the interview explained it to us as follows:  “He made a fool of himself.  He hung himself.   He took no responsibility to what happened in college or his error in judgment at the Combine.  He was arrogant and defensive.  When asked about the balls he dropped in big spots, he responded, ‘What about the ball I caught?’ . . . .  He couldn’t even handle question about his agent change or why he left college early. . . .  Total knucklehead.”

Last week, Manningham sent a letter to all 32 teams seeking forgiveness for his failure to tell the truth at the Combine.  Perhaps he’ll now pen a follow-up letter apologizing for his appearance on Sirius NFL Radio.