Although I agree that they will probably be taken down very soon, I don't think the reason is as simple as "violating OS X terms". Assuming they really do provide preinstalled OS X, violating a contract still isn't (necessarily) illegal, it's a matter of civil/common law.

If you sold me a hat with the agreement that I can only wear it on weekends, could you request a takedown of my website with a video of me wearing it on a Tuesday?