Some body may be beaming things into head to make fun of this guy.
Or it could be to make all people who see paranormal things look like kooks so no one takes them seriously.
I think one is cause and other is effect.
Cause could be many things hallucinations, beaming, real abductions , nut job, making up things likeTS does for feeling speshal,con job, really he is a child of alien ( if so there should be some biological marker, so highly improbable ) etc.
effects : diverting the attention to UFO's from overhead rocks, ridiculing every body who are sensitive to paranormal so that new laws/rules/behaviour can be popularized or he is doing this as a nut job so that people are diverted from the some thing sinister he is doing. Many possibilities
One thing for is sure is 'Aliens are saviour' message makes him cointelpro.