It's not a violation of lay precepts and monks lay down their vows. Citation please.
If monks can lay down precepts for some time (temporarily) then they are not monks. I mean, a monk can't say "I will lay down my precepts of not having sex and not eating meat next week, because I am going back to my hometown for holidays". Once the precepts are taken, they have to be followed sincerely, or at the very least, the intention should always be to maintain them completely.
If what you say were the case, then I would be a monk too, because I only indulge in sex once in a very rare while.
I think this concept temporarily laying down precepts is a perversion of Buddhist precepts by the Tibetans or Westerners.
And there are also questions to the authenticity of the Surangama Sutra:
Same with most of the tantras.What does a consort get? Enlightenment.
Really? Does the consort get the same kind of enlightenment as the male just be allowing him to come over her? If just offering oneself so passively to a reputed lama would bring enlightenment to women, most of the women would happily offer themselves - not to mention, the women would be superior in their potential for enlightenment considering that the male has to be active and put effort and the female has to just passively offer herself. Most of the Mahasiddhas chose prostitutes for their practice. I think this is a violation of Buddhist precepts, for at least the customers pay her in return for her services, where as the Mahasiddha merely uses her for his own personal benefit/liberation.Every school of Buddhism has thoughts on what types of practice are authentic, and what is not.
The Hinayana vinaya is pretty uniform and none of the Hinayana sects claim that sex will not act as an obstacle in their path of personal liberation. Mahayana vinaya is even more elaborate than Hinayana, and it has even more stricter restrictions. Mahayana scriptures also consider sex as an impediment to Buddhahood.
You fail to see my actual question. I am not debating whether indulging in sex is allowed or not in Buddhism for the monks (this is pretty clear in all Theravada and Mahayana scriptures); what I am questioning is if exploitation
of a woman just for a practice is contradictory to Buddhism? Of course, most of the monks and Lamas spend most of their time in seclusion while practicing Tantras, and then when they are quite old they want to practice with a consort. How do they select the consort? Does the consort always have her consent? What happens to the consort after the high Lama's consort practices are over and he retreats back to his seclusion?
Surangama Sutra clearly says that indulging in sex is a great obstacle to enlightenment. http://www.cttbusa.org/shurangama6/shurangama6_1.asp
My friend was a great fan of Osho once, and rather admired his lectures on politics and other worldly affairs more than in spirituality. One of the things Osho claimed was that Krishna, the god of the Hindus (Vaishnavites, specially) was a great Logician. And the reason for such assertion was that Krishna could justify
almost anything by twisting logic. He could justify people fighting in the wars, people using conceit to take advantage over the enemies etc etc. Being an exHindu, I can say that Hindus in general have a monstrous bias towards their religion and mythical beliefs, and they have inherited such cunning logical abilities of justifying almost anything from their Lord Krishna. You can see staunch Hindus criticizing Muslims in online forums for being allowed to take 4 wives, but when the Muslims retort by giving example Krishna, their god, who himself had 16008 wives. Hindus justify this by various arguments.
The point is that anyone can justify anything. And I am surprised how Buddhists also (especially Tibetan) have fallen to the same state of trying to violate Vinaya and then to justify it as well.
Lastly, I would like to post an excerpt from the prophecy of Padmasambhava to further my argument:
Guru Rinpoche further said that in that era, many ordained monks are greedy and pursue wealth and fame. They travel everywhere to cheat on their followers. They plan and think of ways to get offerings and donations from followers and possess their own private wealth and properties, yet they do not engage in any Buddhist practice or chanting on their own. They indulge in music, dance and entertainments. They break precepts and vows yet without any remorse