This isn't necessarily as dramatic as it sounds. EA has an interesting "job ecosystem": They buy smaller companies, keep them alive for 1-2 games, then tend to close said companies' offices and either fire the staff they "inherited" or offer them positions at EA's main offices.

I've heard that EA Canada is only losing about 3% of their people, and that other large offices are being similarly lightly hit; so this sounds to me more like EA deciding that now is a good time to get rid of some underperforming employees and several inherited offices rather than any sort of major internal shake-up.