Here we go, i wasted WEEKS in putting on/taking off all kinds of meshes, changing their textures, bumpmaps, speculars, transparency, rotation, scale, glow, properties and whatnot to finally find out why Motion Blur keeps bugging out on very certain mesh things. FITTED MESH. Fitted Mesh uses extra bones which you rig surfaces to to allow these surfaces getting modified like normal shapes would do, it's a "hacky" fix of doing it but probably the easiest and Motion Blur takes samples of each bone, since Motion Blur was made at the time where Fitted Mesh was far from even being thought about, it was made with 35 bones in mind instead of the 52 we got now, resulting in all other bones to go blurry 24/7 because Motion Blur thinks these are in motion. This error could have gone the total opposite and Motion Blur wouldn't have worked on these surfaces at all which would have made noticing it even harder.
Long story short. It is fixed. Finally!