Look at the suggestions I posted on the original tread for this issue, namely
  1. Ask Tynon to email the Host using the email address associated with the account. If the email is not valid and the host is inactive then assign a new host since the original host's account is fraudulent. If it is valid wait for a reasonable amount of time (a week) for an answer. If they do not get one assign a new Host.
  2. Ask Tynon to appoint a Vice-Host to fill the vacancy.