Complex sentence: This was no doubt an embarrassment to Kay when he finally realised it (especially since the'racism' in question was insincere), and he eventually deleted the post-as well as the entire blog-from the Amateur Transplants' website in late 2007.
Split into simpler sentences: This was no doubt an embarrassment to Kay when he finally realised it, especially since the'racism' in question was insincere anyway. Realising his mistake at long last, Kay deleted the post-as well as the entire blog-from the Amateur Transplants' website in late 2007.