Well there are definitely forces out there that would just love to get inside people's chakras and leech. Well, here we know that tapes and F. Buskii, both have crystals that allow for easy entry of these things. It's useless to debate whether the "mind control" and/or "entities",etc, are the same thing as the critters, or whether the critters just act like satellite receivers...either way it makes a mess.
One thing among many that the Maharic Seal does, is provide some layers of...well...sealing...in the auric field, chakras, cellular compartments, etc, that shut down critters, mind control, etc. So it definitely helps, alot, but the Maharic Seal(connection to highest self) will not allow overload of energies which could harm the body.
So if one is really parasitized then it'll take a while to clear the mess. But if one does this technique several times a day consistently, it should keep one clear of intruders. I have yet to test this in combination with waking up big game Tapes and Ascaris though.
Worth a sincere attempt if one doesn't feel "themself."