A wowhead search of BoP recipes obtained from opening an object got one more hit: , from or . The other one was the from , which you'd already mentioned.
I'd assume other recipes are similarly obtainable but haven't been picked up by wowhead in the process, which would potentially put all world-drop BoP recipes on the list. According to wowhead, the the only recipes that fit that criteria (BoP and only obtainable as world drops) are the two recipes above. I'd imagine there may be others, but I'm not sure what they might be.
The number of lockboxes you could potentially churn-through trying for one of these recipes seems like it would be immense, but I definitely imagine there are people out there who would do it if they know about the opportunity.
// edit //
It looks like is farmable off High Inquisitor Whitemane in the Scarlet Monestary (or at least was before the Shattering). So I got nothing.
Last edited by Verelyse; April 25th, 2011 at 11:26 AM.