There is absolutely nothing unprofessional about counselling someone trying to resist or return from a sexual situation.  I have personally met people who have reverted from homosexuality with the help of counselling and they were happy to have been able to find help.  Counselling is exactly that.  It is not trying to sell something or pushing a political position.  The only unprofessional conduct on this subject is trying to prevent counsellors from doing what they are supposed to do.