  We address the homotopy theory of 2-crossed modules of commutative algebras,
which are equivalent to simplicial commutative algebras with Moore complex of
length two. In particular, we construct for maps of 2-crossed modules a
homotopy relation, and prove that it yields an equivalence relation in very
unrestricted cases (freeness up to order one of the domain 2-crossed module).
This latter condition strictly includes the case when the domain is cofibrant.
Furthermore, we prove that this notion of homotopy yields a groupoid with
objects being the 2-crossed module maps between two fixed 2-crossed modules
(with free up to order one domain), the morphisms being the homotopies between
2-crossed module maps.
