Question [Need Help] My model decided to destroy itself...

So I was working on this model, everything works great in blender. The animations are okay (I'm not the best, but you take what you can take). But when I decide to export it to unity, the animation just destroys the model !

I worked a lot with weight paint. So everything works great in blender.. I just don't know why unity does this..

Anyone knows how to fix this ?

 

@Real_Zakkaroom
This strangely sounds like it might be a weight paint issue. It's also possible, that too many bones are influencing a vertex.