Ryan Leaf Rips Ohio State's 'Silence' Poster ... It's Tone Deaf!!

Ryan Leaf is blasting Ohio State for its new football campaign centered around the word "Silence" -- saying it's stupid and "tone deaf" in the wake of the Urban Meyer scandal.

The Buckeyes released a promotional poster for their upcoming game with Penn State featuring WR Austin Mack making a hushing gesture -- along with the caption, "Silence the white noise."

Enter Leaf ... who has a big problem with the timing and message of the promotion."I know this is a marketing poster for a football game, but the lack of perspective and it being as tone deaf as it is, really says a lot about what the [Urban Meyer] saga continues to reveal about [Ohio State]," Leaf tweeted.

Leaf -- who played football at…