could be the mm's buying back what they sold when they didn't really own it to sell. / Then when they own it they will sell it back to those who just have to have it at any price, if and when that happens.....Could happen on real news or maybe just the perception of news..... Could happen just before some court date and all the anticipation of things going PTSC's way.

Could be that like you say someone(s) accumulating at a steady price. Why would they be doing that? Answer that question and there is the real reason for the buying. Could be someone(s) unloading at a steady price. Answer that question and that is the real reason for the selling. A huge mystery that keeps evolving over these last 12 years.

As a side note but perhaps relevant, a friend of mine bought 250K of American Airlines when it was about to go bankrupt! He bought low low low when there was blood in the streets as they say. Look at the price now!