In "X-Men: First Class", Xavier paused Sebastian Shaw after removing his telepathy-immune helmet. But, he did it using a wire or rope.
Telepathic power is supposed to control minds of living organisms, not wire/rope type objects. So, how did he do it?
Magneto removed the helmet, not Charles. Once the helmet was removed, Charles then paused Shaw.
It was discussed in the X-Jet previously that Magneto's mission was to find the black out area that Charles couldn't access and to remove it. When Magneto found out it was Shaw's helmet, magneto them removed the helmet when Shaw was distracted.