I'm not a lawyer (thank whatever powers may or may not exist for small mercies) but I think this is what's called a shrinkwrap contract, and is totally without force in most places (with California being an exception). Once you've purchased the product, it's yours. They can't dictate to you what you can and can't do with it. Frankly, I think EULAs are arrogant and obnoxious. A far better choice in this case would have been a polite request appealing to common decency rather than legal sturm und drang with no real power in any case.