If it had anything to do with same sex marriage then the church would have closed in 2005 when he made the stance.....since its 7 years later, obviously there is something else going on other than that you moron...... 
You do realize that you can be in the red for YEARS, before actually closing down shop. It's obvious the membership has dwindled steadily over the years. No doubt, some new members joined during that time. But, after a while, the losses mount up.
Besides, you also missed the fact that, "obviously", the PASTOR HIMSELF is acknowledging that his gay "marriage" stance is largely responsible for his church bleeding members.
Trust me. I've been in churches in which there has been friction between the pastor and the congregation. Most members don't just pick up and leave the second the pastor does something stupid. There are friendships and bonds with other church members, school affiliations, and other things to consider.