For what? You can be fired whenever in most jobs. Most you can do is tell the story on linkedin and make the manager look like an ass. No point in maintaining bridges that go straight to the dump.

May depends on if the company tries to stop unemployment insurance kicking in

Something like harassment maybe? Either there is an official redundancy plan and that would make sense, but otherwise it is quite the proof that the work is not in question but like a personal vendetta. Or that the director was trying to defame you by attempting to ruin your reputation with a conspiracy?