staying balanced at all is a bit hard. it needs some work and u cant get it in the first few try´s. view some replays and look how the people there do it.
but, do u mean a staying pose at the end. or balance at all (multiplayer, or while moves in singleplayer?).
If u mean a simply staying post at the end of a replay. is there a tutorial in the tutorial section (
click.) i cant find it now, sorry :/
If u mean a good balance in multiplayer and your own singleplayer replays. then i would say .... practice! try to do a spar in multiplayer (needs much balance.) or make your repalys in -30 gravity. try to do just 1 frame steps (shift+space) then is it easier to control the tori and get him how he should stay.
at all : try to have one food before and behind your tori (the torso.) and the balance should come from the arms. try to relax the knee´s until they are in a good position in which u dont fall. if he falls to the left side. try to balance with the arms to the right side (dont make the move with the arms to fast. or u build to much momentum and then u fall to the right side.)
but the most important thing is ... practice practice practice!