The poster child here is Groupon (GRPN) and while the poor choices of their executives did negatively affect the IPO they are still (11/9) trading above their IPO price of $20 ($24.50 when I glanced).
Moreover, Zynga execs' move was likely intended to increase the total worth of their shares; if they manage to claw 20% more shares, but destroy 30% of each share's value, they've hurt themselves even in the short term (figures made up for illustration, obviously).
Actually, Groupon's execs are widely perceived as crooks.
Their sales teams are apparently very aggressive but that doesn't make them crooks.