Clearly no offence was intended, Greg has apologised and learnt a lesson, that's the end of it as far as I am cocerned.
I think on all these topics we need to distinguish between the behaviour of hate and poorly thought out comments. The first raises serious questions of what roles a person should be in and the second is a learning curve. We live in a more and more complex world and we could all fall foul of saying something stupid sometime without thinking.