Why keeping the SP down?

Attending to some previous comments, it seems a previous director, involved with fraud, is now selling his shares in the attempt to worse the company reputation. We can see this phenomenon in the daily trading, as as soon few retailers buy some shares, he sells bigger parcels, keeping the share price down. I would like to know people thoughts about this. Does it make sense? Would you sell something worth 50 for just 30? It seems a stupid move, as in the end he will be the one losing money once the break through will happen. And we might be very close to announcements that will sky rocket the SP. Well, dear seller, I hope the announcement will be released after you sold your last share and that you will be able to push further down the already extremely cheap SP, so that I can afford to top up and get a multi bagger out of dcc

Hope I didn't say anything stupid but I didn't do my own research, just read previous threads and now posting my ideas through your own researches