This is actually a very interesting question and I think what you may taking about is called "crazy wisdom" as referred to by Bhikkhu Bodhi in this quote from an essay on non-duality:
In this sequel to the previous essay, I intend to discuss three major areas of difference between the Buddha's Teaching, which we may refer to here as "the Ariyan Dhamma," and the philosophies of non-duality. These areas correspond to the three divisions of the Buddhist path — virtue, concentration, and wisdom.
In regard to virtue the distinction between the two teachings is not immediately evident, as both generally affirm the importance of virtuous conduct at the start of training. The essential difference between them emerges, not at the outset, but only later, in the way they evaluate the role of morality in the advanced stages of the path. For the non-dual systems, all dualities are finally transcended in the realization of the non-dual reality, the Absolute or fundamental ground. As the Absolute encompasses and transcends all diversity, for one who has realized it the distinctions between good and evil, virtue and non-virtue, lose their ultimate validity. Such distinctions, it is said, are valid only at the conventional level, not at the level of final realization; they are binding on the trainee, not on the adept. Thus we find that in their historical forms (particularly in Hindu and Buddhist Tantra), philosophies of non-duality hold that the conduct of the enlightened sage cannot be circumscribed by moral rules. The sage has transcended all conventional distinctions of good and evil. He acts spontaneously from his intuition of the Ultimate and therefore is no longer bound by the rules of morality valid for those still struggling toward the light. His behavior is an elusive, incomprehensible outflow of what has been called "crazy wisdom."
For the Ariyan Dhamma, the distinction between the two types of conduct, moral and immoral, is sharp and clear, and this distinction persists all the way through to the consummation of the path: "Bodily conduct is twofold, I say, to be cultivated and not to be cultivated, and such conduct is either the one or the other" (MN 114). The conduct of the ideal Buddhist sage, the arahant, necessarily embodies the highest standards of moral rectitude both in the spirit and in the letter, and for him conformity to the letter is spontaneous and natural. The Buddha says that the liberated one lives restrained by the rules of the Vinaya, seeing danger in the slightest faults. He cannot intentionally commit any breach of the moral precepts, nor would he ever pursue any course of action motivated by desire, hatred, delusion, or fear.http://www.accesstoinsight.org/lib/authors/bodhi/bps-essay_27.html
What I have trouble understanding is what makes even the stream-winner so steadfast to the precepts. In another thread a while back someone mentioned the scenario of a stream-winner being held at gunpoint and given the choice between eating a cupcake that is not rightfully his or facing death. It's far-fetched as most hypothetical situations are but makes the point that rigid adherence to the precepts seems a little bizarre. There are times when there is a choice between two evils and I have to wonder how an enlightened being would handle such a situation. One example off the top of my head would be with a parasite like a tape worm, what choice would an Arahant make?
"The heart of the path is quite easy. There’s no need to explain anything at length. Let go of love and hate and let things be. That’s all that I do in my own practice." - Ajahn Chah