The Satmar Rav in his sefer Al Hageula Val Hatmura says that sometimes the chitzonim make miracles in order to fool us. Aharon Hakohen placed a sheet of gold in fire and an eigal appeared.
There is a very interesting story in the in Beis Hamedrash quoted by Otzar Hamedroshim from Eisenstein about Shimon Keifa also known as St. Peter who built a tower and only showed himself once a year. He was a double agent. He made himself look like he is for Yeshu in order to gain confidence and then was able to sway them away from him.