Measurements of the electron temperature, Te , and density, ne , during the energy quench of a major disruption showed that the onset of T e erosion in the neighborhood of the m / n 52/1 O point at the low field side LFS! accelerates the well-known m / n 51/1 erosion of the core temperature. During this phase T e ( r ) is only partially flat in the region between the q 52 and the q 51 surfaces and n e ( r ) decreases in the core and increases inside the m / n 52/1 island. Immediately after the flattening of T e ( r ) a large peak in T e and to a lesser extent in n e has been observed. This peak is radially localized at the q 52 radius at the LFS, is very short lived and is poloidally asymmetric. T e profiles measured by the heterodyne radiometer and the Thomson scattering agree very well up to the time T e ( r ) flattens but afterwards can be a factor of two different.