Interview Exit Strategy: Diane Abbott's Mobile Phone to the Rescue

Today I have to thank Diane Abbott MP for adding to my small collection of politicians walking out of an interview.

Today I have to thank Diane Abbott MP for adding to my small collection of politicians walking out of an interview (for others, see below).

This is the first one in which the interviewee's mobile phone came to the rescue at a particularly awkward point in the questioning - silent though the ring seems to have been.
Could it, I wonder, be a neat ploy that becomes a precedent for many more such 'escapes' in the future?
Classic interview exits:
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