It's definitely manipulation to try to scare investors into thinking that AVATAR might be a dud or not coming until Feb'ish... and to allow the wolfpack to buy in lower.
It's very curious that they took it right down to the 200MA.
It is an unlikely week to announce AVATAR, though next week would be ideal and certainly "around YE".
The lack of news is contributing to the downturn. Look at the volume during the last few days. I am suspecting that many in retail were waiting for some Rett or 3-71 news and held on to the shares; now they have probably made up their mind to sell before the EOY with the hope of buying back sometime next year, assuming that it will be a bit cheaper especially if they think that there won't be much news for another month or two with the stock going practically nowhere (sideways or a bit southwards).