Should I have said that God is offended by all sin EQUALLY?
Jesus himself told Pilate that Judas was guilty of the "greater sin", which clearly argues against the idea that all sin is equally offensive to the Lord. There are other applicable Biblical references, but this one's kinda hard to argue against since it comes straight from the mouth of the Ultimate Authority.
For what it's worth, I'm with you in this debate. The employee's homosexuality shouldn't be disqualifying in this case at all.