I assumed that the crew member who created the account must have been too busy to write fake posts:
Us - Non stop conversation saying Peter Simon is an idiot, and laugh at him repeatedly saying "Muriel's in" during every show
'Muriel' - Account created with first post saying she loves non stop buying from IW and how much she likes that lovely Peter Simon (who is so very, very lovely)
Us - Non stop conversation about really horrible handbags Peter claimed to be 'designer inspired'
'Muriel' - Post created about the lovely bags they've had recently, she has bought dozens for all her friends and family
Doesn't take Hercule Poirot, Miss Marple or Sherlock Holmes to work that one out.
I have a feeling 'Muriel' will be back on here shortly to prove she exists