Delta herd not "adjacent to Denali National Park," but east of park in Unit 20A. Denali wolves do not, as a group, venture there.
"...all but one of the wolf packs are on the eastern border," is not an accurate statement.

The closed areas (buffer zones, if you will) that I supported were relatively small, but would have helped to prevent targeted trapping and hunting in motor-accessible areas immediately adjacent to the boundary.  Wolves which den in core park do not, as a group, venture far off onto state lands (some wander, yes, but not the bulk, according to park studies), but windblown tundra in wolf townships is good hunting habitat for them at certain times. It is also easily accessible to hunters/trappers.  The Board of Game knows these facts, and has known them, but seems unable to reduce even a small increment of hunter opportunity there. In fact, despite data showing reduced wolf numbers, the BoG doubled the wolf bag limit from 5-10 in the wolf townships in 2014.