they're not really married cause, the preacher preforming the cerimony is apperently a fraud. how could you go against the book your preaching from. because the bible plainly says it wrong.
Let's just ignore the fact that marriage is a social and legal union that does not have to be about religion at all, and that the issue of the same sex marriage is legal and not religious...and instead focus on the point you're bringing up about the religious aspect of marriage.
Yes, the Bible plainly states that you shall not lie with a man as with a woman. So for two men to get married is, from a Biblical standpoint, "wrong," and any two men who do so are doing something that God does not approve of. As for whether the preacher performing the ceremony is a "fraud"...would the preacher also be a fraud if he went against the Bible in other ways?
There are many ways to go against the Bible...for example, let's say the preacher does not keep kosher (as most Christians and even many modern-day Reform or Conservative Jews do not). You might argue that as a Christian, it's not important for the preacher to keep kosher because the kosher laws were written in the Old Testament, which is trumped (for Christians) by the New Testament. Well, the tenets against homosexuality were written as part of the Levitical laws...also part of the Old Testament.
If Christians are able to ignore such Old Testament proclamations as:
Deuteronomy 14:8 - "The pig is also unclean...you are not to eat their meat."
Deuteronomy 22:11 - "Do not wear clothes of wool and linen woven together."
Deuteronomy 13:6-10 - "If your very own brother, or your son or daugher, or the wife you love, or your closest friend secretly entices you, saying "Let us go and worship other gods"...Show him no pity...You must certainly put him to death. Your hand must be the first in putting him to death, and then the hands of all the people."
Leviticus 20:10 - "If a man commits adultery with another man's wife...both the adulterer and the adulteress must be put to death."
Leviticus 20:18 - "If a man lies with a woman during her monthly period and has sexual relations with her, he has exposed the source of her flow, and she has also uncovered it. Both of them must be cut off from their people."
...why is it that they are unable to similarly ignore this one?
Leviticus 20:13 - "If a man lies with a man as one lies with a woman, both of them has done what is detestable. They must be put to death."
I don't see anything outlining that Leviticus 20:13 is somehow more important than the other Levitical laws. Why do Christians cling to this one, and other specific Biblical tenets, while ignoring and throwing away the rest?
In answer to your question about the priest...he was probably already a "fraud" for going against the Bible a thousand times over before he performed a gay marriage ceremony.