As much as I love lawyers
I'd be pretty sure that the ones at corporations almost as big as M$ have actually read - and probably understand - the whole d..n EULA. If they thought it implied - anywhere - that texts created using M$ Word actually belonged - in any way, shape, or form - to M$; then they wouldn't let their corp. use M$ Word. Since so many corps. do use M$ Word, I think you are safe too.