Well I'd like to think the guy's sincere but I'm an optimist.
If a person has no intention of ever acting on base impulses, s/he will not identify with said impulses. Desires that are ignored gradually go away. By focusing on them, they increase and get stronger.
Furthermore, the position of the Catholic Church is that no one who has same sex attraction or identifies as "gay", or who supports the gay agenda, should be a priest.