From a PR perspective, I'll allow that Fischer probably could have handled it better. Not because he was wrong in what he said (as we've all ganged up on Mrjfb to point out), but because there are a lot of Husker fans who heard 'slow blinker' and immediately assumed, like Mrjfb, it was meant as a slam on Jackson's intelligence.
This coaching staff's blinker terminology thing is still awfully new. It first came up at B1G Media Days when Frost first said it and a lot of reporters initially assumed he said Thinker instead of Blinker. Give it a season or two, and most Husker fans will go from "WTF?" to acting all smug and superior when a fan from another B1G team scratches his head and asks what we're taking about.