Seems like they tried to grow the company waaaaaaaaay too fast (practically doubled their number of employees since TW3 was released).
Obviously this sucks, but it's good that they're not unceremoniously dropping people with zero notice (looking at you, Activision). Doubt we can expect an environment where gamedev layoffs suddenly disappear, but people actually getting advanced warning about this stuff would be a huge improvement on the industry's norms.