The spawn is in the middle of a little ring of torches not far from your house. I accidentally destroyed a few of them while fighting off a zombie and couldn't replace them due to weird glitchy lagging. :-/
It would be good to make some kind of one-way safe house at the spawn, something that's safe to spawn into but that you can't run back to one you leave it.
I had rebooted my router due to a few other things not working right so you could've just tried right when it was offline.
But I've just rebooted the Minecraft computer, it was probably due a reboot.