Tonearm - 5:52 am on Sep 7, 2012 (gmt 0)
Who is currently ranking for that trophy keyword, a bigger brand name?
It's Amazon and Wikipedia at the moment.
To me, this doesn't sound at all like a penalty. Rather, it sounds like Google simply doesn't think your page is as relevant for 'widgets' as it used to be. There could be many different reasons for that, but the de-optimization is likely the culprit IMO. If it's possible for you to compare the current version of the page with a version from a few months ago, that might set off some lightbulbs.
Thanks to everyone for your help with this. My rank has increased by 6 or 7 spots since I started this thread. I'll keep monitoring and post updates.