Anybody know how to fix this

[IAMSIAO]

I got my model all set up it's almost ready for upload but I am getting this launching ragdoll issue pretty much a nuke blows up under my legs and launches the ragdoll like 100 miles in the air

[url]http://s1007.photobucket.com/user/IAMSIAO/media/2013-07-02_00002.jpg.html?sort=3&o=1[/url]

[url]http://s1007.photobucket.com/user/IAMSIAO/media/2013-07-02_00003.jpg.html?sort=3&o=0[/url]