Perhaps this change could be the possibility Peter wouldnt have to die.
Hearing Logan's words just confirmed Fex's strange thoughts further.. Wights were relatively short-tempered and evil in nature. Sure Peter had shown this a few times, but it wasn't to the degree of Wights that he knew. Perhaps this was the influence of Quinn's will on the creator. It was a shame as it seemed to be progressing slowly; Peter started to change away from the standard Wight.
Peter would be bullied either way. Now they just have something to obtain from him. He said it himself. They bully him all the time. So why throw his only friends to these bullies. Weakness!