I was there on Sunday and fully prepared myself to see a dark room but to my surprise there was the Yeti but sadly still in B Mode....:shrug:
I can confirm this... I rode EE early Saturday morning on the 12th (during the EMH morning). In fact, I rode it twice. I saw the Yeti both times, it's very dark, there's a slight strobe lighting effect, and by no means is he in proper working order. My wife actually missed him the first time through (I figured she had her eyes closed) and I had to point him out the next time through and she saw him.
Now I know that there are many doubting Thomas' out there, choose to believe or not, no matter to me, but on Sunday morning the Yeti was no longer covered by a tarp.
As a note, he was covered completely on Tuesday the 8th when I rode EE.
My two cents... as someone who does not get to Disney more than once a year I can honestly say how disappointing it was to have NO Yeti at all when we rode it on the Tuesday. I was excited to see him on Sunday and it really does improve the ride, even when he is in "B" mode. My wife was so excited by it that she screamed and giggled with delight when she saw him our second time through. That's proof enough for me that a little bit of Yeti is better than none at all.
I'm not magnanimous enough to say I'm willing to give up the Yeti experience on my trip, though I do understand it needs to be fixed. I guess it's a classic Catch-22. Disney is damned if they do fix it, and damned if they don't.