Sentence:  Something of the same sort happened at Hensberg, Germany, where the nuns were afflicted and committed the sin they called “the silent sin.” In their ecstasies, their convulsions were very violent and interspersed with “<WSD>cynical</WSD> movements of the pelvis.” 
Meaning of the word marked with <WSD> tags:  Like the actions of a snarling dog, especially in reference to (facial nerve paralysis).