I don't think the drop in yge was for any company related news. If yge was the only stock that fell today in the solar sector, then sure, it had to do with something insiders knew about. Spwr and fslr also fell quite a bit so it was just another bad day. If you noticed, it fell a lot in the first 30 min on avg volume which indicates wall street bullying to scare us off. If it fell on high volume then there shoul have benn some news.
I've been in your position before and have regretted it after selling for a big loss. Hold on to your shares long term and you'll get your money back. Don't read too much as a single bad read could make you sell, you know.
If yge drops .10 everyday for the next 2 months it'll go to virtually zero, and that's not going to happen. I would not avg down at this point though. Yge will definitely go back to 5.50 even if it will take a year. They are one of the largest tier 1 manufacturers and have invested too much to just let go.
I know it's hard, but hold on tight and try not to look everyday, it'll drive you nuts!