I went through 20 years of ‘live for work’ then woke up to the fact I was swimming against the tide and this sort of thing reinforces the fickle nature of employment. Why would anyone commit wholeheartedly to something that is entirely transient and can be arbitrarily changed on a whim?
Wake up, move on and get your personal life back.
I find myself almost entirely in agreement with this, the only thing I would say is maybe keep this option in reserve if possible, wait and see what the restructuring brings and if things look just as bad three months down the line then maybe then is the time to jump ? Also, keep copious notes of all conversations, print off emails etc to support your case if you decide to go this way. It’s important not to flounce off in a huff, but to run things in your own way with a plan and a feeling of control.
Good luck.