I sent my MBP to Apple about 3 weeks ago to be fixed. They replaced the display and lid angle sensor. So far, it is working again. Fingers crossed the problem does not return. It worked the first 8 weeks I owned it also. Bought it about 2.5 months ago.
By the way, I suspect Apple knows that some MBPs have this problem because according to the tracking they received it in the morning (less than a day after I shipped it to them) and about 3-4 hours later I was informed it had already been shipped back to me along with the tracking number. I got it back the next day. I think they had no time to test it and analyze the problem. I am surprised they could even replace the parts and ship it back so fast. They must have been prepared and maybe have been fixing MBPs with this known defect from the factory.