We consider basically the heat equation for a function u from the disk to the sphere in a radially symmetric case. Physically it is a model for nematic liquid crystals. In the radially symmetric case we obtain a nonlinear second order PDE for the polar angle theta in spherical coordinates. Under certain conditions a classical solution exists only up to a finite time T. At that time the derivative blows up, the solution theta jumps at r=0 (for example from 0 to pi) and the energy jumps too in the opposite direction. Suppose the solution has made one upward jump at t=T in r=0 from theta=0 to theta=pi (the energy jumps downward), then we have stored energy in the origin. Since the model describes a physical system we expect the energy to be released at some time t'>T. But to do that we have to violate the decreasing energy condition. To resolve this we look for generalized solutions with decreasing energy when they behave like classical solution and satisfy the condition E(t)