I don't know about genuflecting (I would assume he means only immediately before receiving the Body and Blood, I thought it was encouraged otherwise...)
As far as receiving in the hand versus on the tongue, I believe that according to Cannon Law, the faithful person retains the right to receive either on the hand or on the tongue
QUOTE
Once implemented, the option to receive Communion either in the hand or on the tongue always remains with the communicant. No priest, deacon, acolyte, or extraordinary minister of Holy Communion may refuse a communicant Communion on the tongue. Likewise, once the local bishop has introduced Communion in the hand, none may refuse a communicant Communion in the hand (except when Communion is being given by intinction, in which case it must be given on the tongue).
Reception of Communion(If you notice, there is an imprimateur at the bottom, verifying it's authenticity)
I'm not certain what document it comes from, but I could probably find out if you need me to.....
We are guaranteed the right to receive as we like; your priest, despite what I assume to be his best intentions, does not have the right to request you to receive in the hand if you prefer not to.
As far as your posture, kneeling, after genuflecting, etc, I have no idea though....
Hope I helped.
In Jesus and Mary,
Lauren
ps- you may want to move this to the apologetics board. I know there are a lot of people out there who are more familiar with cannon law and with the GIRM than I am. They might be able to direct to you to the exact location in documents...