I can only comment on my own experience. I have been SB'ing for 5 years now, NEVER experienced this price manipulation, NEVER had problems opening/closing trades. Never seen any of this so-called underhand tactics.
Rather than gross generalisations, if you are accussing SBs then give us specific examples of what they did.
I think most people are too quick to blame SBs for their own lack of research and understanding into what SB is and how it works.