  It has been recently argued by some authors that is impossible to construct a
Weyl invariant spinning membrane action, where the $S$-supersymmetry associated
with the 3D superconformal algebra, is relinquished without gauge fixing.
Contrary to those assertions, we show why it is possible to construct a
Weyl-invariant spinning polynomial membrane action, without curvature
terms,where $both$ the conformal boost symmetry and $S$-supersymmetry are
explicitly broken by the action. It is shown that the gauge algebra $closes$
despite that the two latter symmetries are broken . For this to happen, a
modifed $Q$-supersymmetry transformation, a sort of new $Q+K+S$ ``sum `` rule,
is required that generates the compensating terms to cancel the spurious
contributions fromthe $S$ and conformal boost anomalous transformations. A
substantial discussion of the quantization of the spinning membrane and
anomalies is given. We review briefly the role that this spinning membrane
action may have in the theory of $D$-branes, Skyrmions and BPS monopoles in the
large $N$-limit of SU(N) Yang-Mills .
