turn on one's heel
spin on one's heel

He spun about on his heels and left the room.

Without saying another word, the boy spun on his heel and left the ready room.

He spun on his heel and went back out the front door.

She spun on her heel and started for the door.

He spun on his heels and ran from the room, the others following.

She took one look at him, spun on her heel, and was gone.

He gave the man one last, long look, then spun on his heel.

At that she spun on her heel and left the room.

With that, he spun on his heel and left the room.

She spun on her heel and walked out of the room.