This is a plausible scenario. What could actually go wrong in an OTC deal wherein two parties both agreed to terms, right? Safe and easy money, with low risk of getting burned: that's what banks do. No remorse on what's going to happen in a market, just fast, cold hard cash is what's important at the end of the day.
What also amazes me the most is how these banks and big money get out of such steamy situations once they got busted, or how things like this still happen in a regulated platform/market/economy? There's so many questions that spring to mind once these certain topics pop up. We all know that banks produce big profits in dirty ways in such a short span of time, but how they keep on doing this for centuries without the public realizing is insane to comprehend.
Questions need answers from a long time
Dirty money controls many of the policies of states and some huge entities
Do not rule out the involvement of major banking entities in such a plan.