  The gist of using the light cone gauge lies in the well known property of
ghosts decoupling. But from the BRST point of view this is a stringency since
for the construction of a nilpotent operator (from a Lie algebra) the presence
of ghosts are mandatory. We will show that this is a foible which has its
origins in the very fact of using just one light cone vector ($n_\mu$) instead
of working with both light cone vectors ($n_\mu$ and $m_\mu$) to fulfill the
light cone base vectors. This will break out ghost decoupling from theory but
allowing now a consistent BRST theory for the light cone gauge.
