OK - I will play the devil's advocate to that: in all other chess "touch, move -- touch, take". Why should different apply here? If you press the "go" button wrongly and impatiently, why should you be allowed to take it back? I have not decided my opinon on this issue - but I see strong reasoning not to allow it.
If Nigel Davies votes "go" on his side of the vote game - he doesnt get to withdraw. Why should we?
Both sides play by the same rules. The rule exists to teach thoughfulness BEFORE moving - not ex post facto.
As for how others vote: bleaaaatttt!!!!
so 8+ votes in favour of vote-retraction! [cuendillar's vote surely counts as at least 3 !
Thats a compliment, not sarcasm!]