You can always cure, wipe with D-Sperse and then very lightly use a block buffer or a Girlfriend buffer (black side) to smooth and then continue as normal (having the tacky layer removed will not affect the performance of Shellac in the slightest).
Oh thats a good thing to note, i was actually quite tempted to do this last night but I had thought that I couldnt remove the tacky layer, helpful if I have in fact contaminated my bottle
(thankfully its nearly at the end and i have a new bottle waiting, i wont be making the same mistakes). Think i'll call my friend back and tell her i'll redo them. Thanks for the advice