Regardless of the actual legality of the license agreement Microsoft are very fond of fighting law suits (even when they are likely to lose them) so I won't be permitting CIYAM to be involved with any situation that might end up in a potential law suit with Microsoft.

Imagine if every bug fix (published in a future version) could not be applied to a clone for fear of a lawsuit with Microsoft for merging the commit (you just aren't going to risk the trouble IMO).