Before Mickey Mortimer wakes up...
Under these circumstances, either _T. formosus_ is a nomen dubium, or a new holotype (neotype) would be designated in order to keep the genus _Troodon_ as a valid taxon (as was done with _Iguanodon_). If the former, we would go back to calling the family Saurornithoididae.
No, why? There's no reason to dump Ceratopsidae or Titanosauridae either.