This is exactly what happened, I was short probably a few btc cents because I had a withdraw limit on Poloniex and miscalculated, but I thought that there would be some sort of a system which would just give me fewer WGR. I emailed the support team with all the info, thank you for the quick replies, this makes me feel at ease now, because for a second I thought it might have all disappeared into a block-chain black hole (wouldn't be the first time for me).