Yeah, those are some pretty low odds. You should feel happy about drawing that tag. You got pretty darn lucky there. Don't feel too bad about those odds though. We have got tags here in Colorado that you have a .0084 (or something like that) chance of drawing the tag. When you are counting fractions of a percent, then you are talking about some astronomical draw odds.
On a side note, that would be a pretty darn amazing experience to hunt elk in Oklahoma. That would be awesome!