Yeah that first video definitely indicates that your parrot does not want that type of attention. I think it's a mixture of trust and actual interest in a head scratch that will result in your parrot wanting that type of interaction. Through extensive training I can now pick my parrot up in my hand and flip her over and she doesn't mind too much, but she actually has no interest in head scratches or cuddling. She used to like head scratches but lately not so much.
It's the mood your parrot is in, you can not FORCE your parrot to like it, but you can force your parrot to endure, which I don't think you should do. I would suggest doing other fun activities with your parrot like trick training for treats. Here're some basics:
http://trainedparrot.com/Taming/ and then on the same page is links to information about tricks to teach your parrot. Please be kind to your parrot. He's so little but that doesn't mean you should overpower him. :]