Hi, I just want to check on a couple of things. Do you have key framing set to Automatic? If you do, every time you move a body part, that part will auto-key frame. Manual key framing can lead to unintentional issues unless you are very vigilant. 

Note that the only parts that key frame will be the ones that you directly manipulate. All other parts will gently tween to their next key frame unless you set the tweening controls to prevent that. So, if you move a hand with inverse kinematics engaged, the whole body will pull in the direction of the hand.

A couple of screen grabs will help us figure out what's going on. :D

Mark