I think this pretty much proves there *was* something going on behind the scenes between EA and Nintendo. One of them seriously screwed the other one over (and considering how pissed EA is Nintendo did something stupid too).
If this was just a factual business decision EA wouldn't go on trashtalking the console and destroying their future business relations with Nintendo.
It proves that it was cleary a business decision after analysing the Wii U market:
Yep, we've got plenty of problems, but WiiU isn't where that family/casual market is. It's on mobile/tablet now!