Do what you should have done in the first place rather than use OpenDNS--install and use your own DNS Cache.
As for what happens if/when Eastlink blocks your external access to remote DNS servers...well, we'll talk about that when it happens. -- Some people think I'm an idiot. I disagree, but idiocy is subjective--so they may well be right. With this in mind, take everything I post with a grain of salt, eh?