Red shirts withdraw from Bangkok and the current government ceases police and military action. The original November election is held as originally proposed. Some UN monitoring is allowed for the elections but no UN investigation into the demonstrations is initiated. Both sides agree to abide by the outcome of the elections but with a lot of pre-conditions with regards to the candidates that parties are allowed to field. The result will be candidates that no one really likes and some kind of hung parliament that muddles along for years. Think Phillipines.
Not very accurate at all - not even close considering the results of today's elections - it's a good thing I still have a day job.