Regardless of whether he said it or not, it was implied, hence the article. The entire purpose of the article was to let people know he's not pleased about the Broncos looking to sign other players who will probably take his #1 jersey, the problem of a lack of Fullback wouldn't have even been discussed if Hoffman didn't play like absolute shit in 2012 and hadn't lost his jersey to Corey Normal in the first place.
He can't blame anyone but himself for losing the starting gig at Fullback, he was moved to the Wing based on form, he's played easily his best first grade football on the wing, he should be happy to stay there (If we sign Barba / Milford), no questions asked.