Аннотация:The detailed continuous fast optical photometry analysis obtained by MASTER GlobalNetwork for the GRB160625B optical counterpart MASTER OT J203423.51+065508.0 is presented. There are also hard X-ray and gamma-ray emission obtained by theLomonosov and Konus-Wind spacecrafts detectors. We detected quasiperiodic emission components in the intrinsic optical emission of GRB160625B and propose a three-stage collapse scenario for this long and bright GRB. We associate quasiperiodic fluctuationswith forced precession of a Spinar, i.e. self-gravitating rapidly rotating super dense body,whose evolution is determined by a powerful magnetic field. The spinar’s mass lead it tocollapse into a black hole at the end of an evolution.