Nicely developed ritual, you've shown. It would be rather amusing if the ritual had removed not only all spells on Harry, but through his intense bond with his wand, on the wand, too, so that the Ministry could no longer track him. It should be interesting to see how the summer develops from here.
Author's response
Aah you shall have to wait and see if the spells on his wand have been removed. Yes, he shall only be with Seamus and Dean for another chapter, maybe two. Thanks for the review :)