Even if they downgraded to Class A (6 kW maximum), they'd still have to be 95 km away from KMGL, so the OKC antenna farm is out. Unless they can work up some complicated scheme with competitors, they're stuck where they are.

From my own notes:

[T]he deal that allowed the Sports Animal (WWLS) to move from 97.9 to 98.1 was somewhat complicated: it required the moving of a Stillwater station (KVRO) from 98.1 to 101.1, and a substantial reduction in power at the KATT (100.5) to reduce interference to the new Stillwater signal. The FCC has overseen swaps much more complex than this, though.