Right now Pinetrees fully diluted interest in KEK is $4.3 million at current market cap, $25 million for ANY and $29 million for POET. This assumes all warrants exercised and current market price, but does not account for costs to exercise those warrants.
So I think it is probably safe to rule out KEK saving the day for POET.
ANY could be a contender but I have no idea whether there is expectation for any big catalyst save the day for that one before the end of the year?
Sheldon is risking far more than just the failure of Pinetree if he does not have some firm commitments or is gambling that the Venture is going to turn around by the end of the year. There would never be a stronger case for a class action suit against Sheldon if Pinetree fails.
So yes it is all speculation but I think POET is the most likely source of his salvation.