I'm in total shock...

I've just been literally "briefed" and informed that in light of recent restructuring, some secretaries are being redeployed. I knew it was on the cards but a proper sit-down formal chat would have been welcome.
Not only shall I be moving buildings again (!), but I shall be supporting A.N. Other who I don't even know. It will be like starting all over again.
Is it any wonder admin staff get disgruntled when this is how management treat them. I quite literally feel sick. You can imagine my face when my boss's boss asked me if I was aware of the imminent change and again when he asked if anyone had made me aware this was happening.
Why do people assume someone else has done their dirty work?!