Rotating an object that already has an animation

So, I was an idiot and made a object sideways without realizing it, imported it into Unity, finally realized my mistake, but when I went back and rotated it in Blender, all the animated parts are still facing the same way they were during the animation
Before: http://imgur.com/aUXkJpn

After: http://imgur.com/8LlxINo

Anyone know a way to fix this? Or do I just have to restart? :confused:

delete the anim curves and redo it !

happy bl