Anyone continually shorting from 200p in May made some pretty duff calls when they jumped 50% in June, or during the 53% share price rise in August/September. Surely no one can be naive enough to believe shares only move one way. I suspect that the skilled shorters traded from their yachts in the Bahamas and don't bother posting to bulletin boards.
I think VOG (along with a pile of other oil and gas explorers) will either:
a) release a good news RNS and the SP will rise, or
b) release a bad news RNS and the SP will fall.
In the interim, assuming there are no rumours (and I mean market based rumours, not the arbitrary comments of rampers/derampers on bulletin boards) then I would expect the share price to drift, which has happened to a number of similar shares recently (eg EME, GOO, etc.)