Yeah, that was my first impression and I guess you've basically confirmed it. I'm still having some trouble in my head with this. I guess imagining it another way would be something like a tank of compressed gas being opened, but the hose is bent at one point so that it's facing the opposite...
Sorry the title sucks. It's hard to be descriptive about this in a title. I did a cursory check of the other topics and I didn't see this and assumed I probably wouldn't.
I get very most basic idea behind rockets, every action with an equal and opposite reaction and all that jazz. Something...