Wow. I was out last night and it was about 8F (I think the wind chill was just really bad). It was too much for a heated gloves and my fingertips hurt; I only went 10 miles and it was the worst ride ever in cold. I think it was the wind chill that did it. It was on my Vstar with big fairing and it would've been worse on the FZ6.
Even without a pinlock, my visors have never frosted like that. Last night I wore the pinlock setup and it was ok.
Even today at about 25F and sunny on my FZ6 (about 50 mile ride), I used my tinted visor with no pinlock. I cracked open the shield a little if it fogged. It had nothing like that frost.
Even with my pinlock and when it's working, it can get cold enough that I don't get fog on the inside -- but I get condensation -- enough that if it drips, it freezes on the tank. But I still get no frost.
I wonder if you need to clean your visor and apply something slippery; I use Lemon Pledge.
Either way at 11F, I bet you had one heck of a wind chill going and I'm not sure how you could see out of that helmet and I think you need to add a defroster to it

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Dennis