3D character deformation imported from maya

Hi everyone, I've imported an animated 3D character from maya into unity. Animations work like a charm but there seems to be a problem with mesh itself occurring some displaced vertices. I'm animating character with NURB curves so i both select controller curves and polygonal model and export them together with baked animations setting checked. I'm sending you some pics to make it more understandable. Displaced vertex:

My FBX export settings:(Closed tabs remains unchecked)

Could it possibly be paint skin weight problem? Or some incompatibility problems? Waiting for answers. Thanks in advance..