@Sajeezzar,
That's right pc-hero just kind of jumps because many ani's are part of a *looped ani* (a sequence of ani's) - I'll be away for a couple of days, i'll explain in detail when i get back.
Edit. More info
Explaining in detail how the G2 ani's link together would be time consuming, instead here is the command to sit on the ground from a standing position or from another running ani' using the "play ani" command.
t_stand_2_sit
enjoy.