It occurs to me that the old THF/TBAF and the reaction mixture could be mixed and the reaction tried again. I imagine that we will have to perform the whole synthesis over again, anyway, but it would be nice to have some product, even if it were less pure than is ideal. We are obtaining new TBAF/THF.
EDT
The old bottle is probably slightly more concentrated than it was before, but given all other uncertainties, the difference may not matter very much.