Man can do whatever he wants. So long as he understands the technique required to do what ever it is he wants to do. Techniques are just refined knowledge, which can be refined to a significant degree.

Man can materialize things. Whether or not this man could is up for discussion. I do remember reading books which describe that either he or other Hindu gurus like him would manifest ash and other things in large enough quantities as to be believed. If someone is doing such a thing day in day out where ever they reside it would be harder to fake than something like the video.