Sure there is if it was in a controlled environment with multiple recreations of the experiment and full documentation.What would be considered scientific proof that a bed is moving not by the a human's own power? The thing is, I don't think there's ever any proof that you would accept.
By the way, the people involved in the story I'm getting this from.....weren't even Catholic yet they still decided to baptize their 13 year old into Catholicism.
And how the hell do you scam a 13 year old into speaking perfect Aramaic?
The same way you teach a 13 year old to speak two languages from birth. Just because it's unexplainable does not mean there's some supernatural reason for it. Again, that's not saying the supernatural explanation is wrong but there's absolutely no more indication that it was a demon as opposed to an alien from another planet playing a prank.