To me, unless Saudi Arabia actually bought the oil fields and never exploited them, I don't see how they would magically prevent oil from reaching the market again. Sure, for some time companies will go bust on the low prices, but expense cutting will be sought in any way while the oil still in the ground just becomes more valuable in the future, so eventually the potential return rate is high enough for exploitation to start again.
What then? OPEC will boost production again? They can't play this game indefinitely, unless they manage to do this until no one even cares about oil anymore.
It seems more likely to me that prices will slowly creep back up, we just won't see as much speculation; like after any bubble, people are more risk-aware, so they won't want to get caught twice. If anything, that's a good thing, it means prices will stabilize at a lower price than they would have otherwise been if OPEC had never gone this route to begin with.