The manager handled it badly and clearly played in to the hands of those wanting to make their political points on camera.
On the other hand, how professional is it to jump up and start ranting and raving when you are plugged in on an operational sector ? Don't you give a stuff about the traffic you are controlling ?
Two wrongs don't make a right.
The 'controllers' involved need to consider what holding an ATC licence, with safety accountabilities, actually means. Reacting and losing control when you are supposed to be providing a service to aircraft within your sector does nothing to help promote your case against the Government and AENA. The impression it creates in aviation professional circles is that you are hot headed and a potential risk to air safety. Your state of mind is also probably not conducive to providing a safe service since you will be thinking more about the confrontation which just occurred instead of the service you should be providing.
The time to react and make your points known is once you are unplugged and where it won't distract your colleagues.
If you can't do that, you're in the wrong job.