We continue a comparative analysis of competing generation mechanisms of the zebra pattern (ZP) (under conditions of double plasma resonance and in the model with whistlers) based on new data. At the same time, a zebra structure was discovered in the radio emission from a pulsar in the Crab Nebula. Its analysis has already been carried out within the framework of various mechanisms, and here, we propose a new mechanism of explosive instability, more suitable for the parameters of the pulsar magnetosphere.We also show new analysis of unusual type-II bursts with cessation of the frequency...