Vaj,
there's a passage I read, I think in the Mei Hashiloach, that seemed to be suggesting something very similar, that once a person attained a certain level they would no longer need the laws and restrictions they had been observing in order to attain that level. Found it. It's on Deut 30: 12-14. The Isbitzer quotes Zohar as to how the words of Torah seem beyond the sea, then he quotes Tanna Dvei Eliyahu (Zuta, Ch 12.) "A Parable. A mortal king builds a wall by way of which one enters vast palaces. In the wall he opens a narrow passageway, so narrow that one who does not love the king will not exert himself to enter. Yet one who truly loves him will push himself for he knows that after difficulty, great delights await him."
Then he explains how someone who doesn't understand Torah, the words seem very precious and high. Then when he comes to know the meaning "it is not in heaven, and not across the sea... but it is near unto you..." And so he says that Moses specifically put these words in this parsha, which follows the fiftieth parsha and thus at this point he had attained the fiftieth gate of understanding, the understanding that it is not in heaven but near.
And he explains that it means "even though a man needs fences and boundaries while he does not yet understand the words of Torah, once he understands them, he does not need this. 'It is not across the sea' means that he does not need to be far from the delights of the world, which is called 'a sea'" (he often relates water to desire because of how strong a desire thirst is in someone who has gone without water.) "Only at the beginning, for he can only initially enter into the words of Torah through great restraint and separation from earthly delight, but this is not the main principle..." and he does say that the main principle is doing God's will and goes on quite a bit longer, so that it looks like what he wants to do is have a person discard the negative mitzvot, which are the majority, and hold onto the positive mitzvot, whic h are a minority.
Dauer