In all seriousness, that actually makes a bit of sense...
Xavier gets a Life Seed and wants to do something, but he can't do it, so he needs a fall guy...Nate.
Originally Posted by Glio
Maybe he orchestrated everything so that the X-Men could not be active while he made his plan. Age of X-man and the vaccine would be a perfect distraction, no one can worry about what Xavier is doing.
Originally Posted by Rosebunse
And he comes back to a team that is either completely in total disarray and traumatized after AoX or completely pumped up after several good victories and a death.