I don't believe it is possible for TLD to be delayed forever. Bankruptcy is more likely in that case.
Not here to dish out hopium, you do what is right for you.
Does anyone actually think it is remotely possible that NWBO would go back to the chopping block and say we need another 5 years to collect a little more data?
We'll know soon enough if they've got the goods, or if they died trying and AF was right after all.