Shyna Is In Need Of A Cleanup (help please?)

i only just figured out how to make physics, making her somewhat stiff hair physics on the front, and in the process realized what a mess this model is. i tried cleaning it up myself, but it crashes everytime i try deleting physics and i'm not sure how to stop that from happening... i tried only deleting the ones that weren't attached to a bone, and not only did that not clean it up, but it also made MMD crash... so uh yeah. luckily i kept a backup. anyone willing to help? not sure what i can do in return if its too much of  hassle, but i'm sure we can figure something out...