Are you sure you can't edit User_talk:David_Tombe? It looks to me like it's not protected anymore. Don't underestimate the amount of research admins do before deciding on an unblock request. You can also assume that a lot of them also read the AN/I discussions concerning you when they took place, even if they did not participate. I think your best strategy will be to lay low for a while, then make another unblock request, pledging to follow all Wikipedia policies, including those concerning block evasion and sock-puppets, and to assume good faith concerning your fellow Wikipedians from now on.