Liquidate? That takes a minute. Sell with a market order if you are so concerned. I've got a time/sales window open waiting for the trades to go through.
They could have sold some 10 million of those 15 mil which they bought pre-buyout-news. I believe they bought it when it was around .005, they could have sold at say .035 and make a whooping 150,000 for themselves. This money could have been used to pay lawyers , accountants and other people involved in the deal.