Source for them being hands on with their biggest IPs? Most of what I've read about EA says they're pretty hands-off. Studios go to them with a pitch and then they have a bit of a negotiation to decide what features the game will have, how much cash they'll need and when it will be ready. EA's biggest sin seems to be giving the studios that much leeway but then not giving them extra cash or more time when the project ends up over budget or behind schedule.