yep. pull ALL the spark plugs out and crank it, make sure you disconnect the injector loom so you dont get any more liquid into there. when you're sure its all cleaned out then plug the injector loom back in.
a suggestion to getting the oil out, ive never tried it but it kinda popped into my head as i was typing..
grab one of those kitchen detergents with the removable lids, shove the feed into the bore and pump it into a bottle.
goodluck