Happy April Fools Day to you too, OP!
Here's a cookie!
EDIT: Wow, denying it being a joke? Alright, I'll make an argument here:
You're
wrong.
They do it because it's good PR. That's it. Sure, not everyone at EA is a greedy bastard, and many-if-not-most probably do respect BioWare.
But, do you really think the higher-ups choose what to do with the logo? They have a group of people designated to take care of that, and they thought they'd have a little fun and get a little creative since it's a boring-ass job to just create one logo and animation every few years.
So, in other words, that's an ATROCIOUS reason to trust EA with BioWare. Trust them with BioWare because they're fuckin' loaded and can fund massive games. Sure, they might miss sometimes, but most of them are fuckin' fantastic!