Not sure why the company would want "revenge on the shorters", the only thing that matters is the company has to display that they are in control and moving towards profitability. The managements energies should and probably are being soley direct at this goal.
Only weak companies are targeted by short selling, this latest RNS seems to have been the catalyst to change investment opinion. Taken alone it would not have been sufficient but with all the news this year it is enough even without the news on the injectibles to convince many that the company is turning the corner.