I imagine if oil is down tomorrow, stocks will be up or at least flat as that's been how it's been going for everything outside of oil stocks lately (except it looked like for a while that economic fears might hold down more economically connected stuff on Monday...then the Dow made a 300+ point loss go away and turned positive).
Heck, oil is down as I'm saying this and there's a minor response already. Of course, it doesn't matter yet because in the hours to come, something dumb could happen to cause oil to spike.
Edit: Well, here's what hit oil:
Uhhh...
1. This shouldn't have caused the kind of response that it did to crude because you're depleting your reserves.
2. I hope there's a plan to replace these reserves if this happens. Considering that this caused a decent response to the price of crude, wonder what would happen if they came out and said they're loosening the regulations they put in on oil.