This is a design I did for another site. I just found out that submitting a design, whether I win or not, hands over all rights to the Sponsor to do with it whatever they want. I'm not comfortable with that. I like that I get rights to my own images back after a time period here on Threadless and on Woot, and probably other sites as well.
Is this something that I could submit on Threadless? Or is the use of the Princess Bride movie quote and my drawing of the R.O.U.S. too much.....would I have copyright issues?

Please see my R.O.U.S. design.