Here is the opinion in Muscogee (Creek) Nation v. Henry (E.D. Okla.):
Muscogee (Creek) Nation v. Henry
Muscogee (Creek) Nation Motion to Enjoin Enforcement of Tobacco Master Settlement Agreement is Denied
The complaint in Muscogee (Creek) Nation v. Henry is posted here.
Preliminary injunction materials here:
DCT Order Denying Muscogee Motion