The Russ hoagie -- dubbed the "The Dangerwich" -- debuted on Subway's exclusive "The Vault" menu back in February ... and it seemed to initially be a hit.

There didn't appear to be any problems with the sammy -- which featured pepperoni, salami, ham, cheese, bacon and veggies -- but when the org. began releasing some ads with the Broncos QB in them, that's when the backlash began.

Russ looked super cringeworthy in the spots -- including one where he, decked out in sunglasses and a leather jacket, suggested a way to eat the meal with a fork and a knife.

The vids quickly became a meme on social media ... and after Wilson's awful start to the NFL season in Denver, the Internet hate grew exponentially.

This week, fans began to notice the sandwich had been removed from Subway's menu ... and many believed it was due to all of the trolling.

But, a spokesperson for Subway told us on Friday that was not the case -- and that the sandwich had actually been pulled in August, before the season began.

"Subway works with a variety of athlete partners, and The Vault is the perfect place to showcase their favorite sandwiches," the spokesperson said. "While The Dangerwich sub left The Vault in August to make room for some new, craveable options, don't worry, The Dangerwich will be back soon!"