Manipulation

I've seen this sort of pattern of manipulation, regularly. The price holds firmly, here at 11 cents, no-one is selling lower. There's a stand-off, for some time. Next, buyers step up again, and 11 cents is holding. Then we get these strategically timed CXXT bids, what is this, is this Brokerage Firms exercising buying privileges? We see these same CXXT bids coming in after closing time. Always forcing the price lower, and often-times panicking nervous sellers into lowering their offers. I notice this strategy is becoming less affective, maybe because so many nervous noobs have been shaken out already. Someone may tell me here this is all legit, but it looks a lot like manipulation, particularly with regard to the way it is typically being timed. Can anyone enlighten me here, am I correct in these assumptions?