  Angle and temperature dependent torque magnetization measurements are
reported for the organic superconductor kappa-(BEDT-TTF)2Cu(NCS)2, at extremely
low temperatures (approx. Tc/10^3). Magneto-thermal instabilities are observed
in the form of abrupt magnetization (flux) jumps. We carry out an analysis of
the temperature and field orientation dependence of these flux jumps based on
accepted models for layered type-II superconductors. Using a simple Bean model,
we also find a critical current density of 4x10^8 A/m^2 from the remnant
magnetization, in agreement with previous measurements.
