Marje was correct. It happened last Monday. I abridged the story for brevity. It appeared that the person was making a call (as no ring tone had been heard) but he could equally well have been answering it. He was first given the "look of shame" by the session members, then asked to turn off the phone and, if his call was important, to take it outside. He refused to comply, at which point the dressing down took place. Eventually he left having got no sympathy from anybody he appealed to for support.

Moral: If he had gone outside in the first place he could then have come back in again with little or no embarrassment.