Perhaps you guys can help me reconcile some recent trading...

Perhaps you guys can help me reconcile some recent trading experiences. The most recent being trading OBJ. I bought 600,000 at 1.5 fri lunch time watched it go to 1.7 with no sell depth and thought it would do what it did today. I had a stop in at 1.5 but moved it down to 1.4 as it slowly got sold down. It closed at 1.4 and it appeared to me someone was soaking up as many 1.4's as they could fri a'noon.

OBJ opened 1.6 today and it soon became clear to me, i got 300,000 at 1.8 today, watched it clear 2 and again the depth looked to me that it would do what it eventually did. I had to go out and set my stop at 1.8 thinking it was fairly safe. It appears I got stopped out not too long after setting it.

Couple of questions:
1) Do you think brokers can deliberately sell down to trigger stops and accumulate
and the main question
2) How do i mentally accept a $600 loss fri a'noon and a breakeven today when the stock finished at 2.6 today?
I have a couple of other experiences of this recently including CNP

I would appreciate any advice