You need to re-read the expression in the context that it was meant. My love for Christ and truth compels me to abide by his will, therefore i assess and weigh everything in order to determine what is the most beneficial to man, and pleasing to God. In other words, without Christ, I wouldn't care about my responsibilities towards my neighbour.
Atheists may refrain from doing wrong for other reasons i.e. their kids or families, fear of consequence, desire to not hurt or inconvenience someone, possibly love for justice and equity etc...
I'm not saying that their devoid of righteousness. I'm saying that my judgements against homosexuality, and all sexual deviations and perversions, are derived from my cognizance of Christ - you were the one that was saying that I wasn't Christ-like due to my contempt for the gay lifestyle. I denounce homosexuality in the name of God and Christ.
Now subterfuge that!