Paul, can't people just post their race comments and not be picked on about it? It appears as if you have a grudge with Sky and take his words seriously, but what if he's just joking, does he owe an explanation? Just let him have his fun (or lack of). If anyone should be responding it should be the target of his comments, not you, IMO.
Generally, yes, but this could be construed as gratuitously offensive. Just making sure that Sky is aware that not everyone will find it hilarious. I certainly do not have a grudge with Sky but I am concerned that a growing grudge between Martin and Sky could end up ruining races for others. That's from my Mod POV.
From a personal point of view, I'm not bothered either way.
We're not kids though, if someone doesn't find it hilarious or doesn't get it, then so what? As long as incidents are moderated, penalties handed without bias and drivers trying to improve, it's all fine IMO. And if they have a problem between themselves, it won't be solved by attacking either of them or limiting their freedom of expression. No swearing here, so I see no problem.