  A novel form of Jahn-Teller (JT) effect in the cuprates can be reinterpreted
as a conventional JT effect on a lattice with a larger unit cell. There is a
triplet of instabilities, parametrized by a pseudospin, consisting of a form of
the low-temperature tetragonal phase, a charge density wave phase, and a flux
phase (orbital antiferromagnet). On a single 4-Cu plaquette, the problem is of
E x (b_1+b_2) form. For a special choice of parameters, the model supports a
dynamic JT effect, but is classically chaotic. The connection of this phase
with Berryonic matter is discussed.
