I just saw that Orijen are changing their recipes, and this is why the food hasn't been that available recently.
The changes seem to be 'whole prey' - ie - they are including organ meat and ground bone in the foods, not just muscle meat.
However I believe the bags have gotten smaller and more expensive.
The brochure for the new foods is here:
http://orijen.ca/wholeprey/ORIDRYWEBBRO2012.pdf