Yeah, there's definitely some kind of glitch in whatever system provides the projections. What's amazing is that I've seen several drafts where managers are bypassing the best defenses and picking garbage ones in order to win the projections battle and try to get the best draft trophy. It's ridiculous. I took Denver well after defenses like Tennessee, Atlanta and New Orleans were drafted (Atlanta is even trending as a top pick up right now because of their Yahoo projections, yet most pundits have them ranked around 20th overall).
Yahoo really needs to work on fixing their projection glitches. I'm sure there are far more errors out there than simply Decker and the Defenses.