Mr. Awad might be talking about the intention to disinherit a spouse, possibly in favor of an eldest son or something like that. Under Oklahoma law it is perfectly legal for a person to disinherit his/her spouse by a will. It does not affect the admissibility of the will to probate at all. The disinherited spouse does, however, have the right to elect to take from the estate according to the law of intestate succession, setting aside the will to that extent, meaning that the spouse would receive at least one-third of the estate contrary to the wishes of the testator.
I don't know if Sharia would treat this issue differently, but I assume the difference lies somewhere in there.
Based on what I've read, it all seems too speculative. I still don't see how the standing requirement is satisfied. I'm not following the case closely enough to see whether the court has even addressed standing.
I'm failing to see a real threat in what Awad alleges.
I don't really see how if someone's final wishes are in accordance with Sharia law that they would be any less admissable than the final wishes of someone under Hebrew law or Christian law. You can form the basis of your will off any particular dogma you choose and the court will carry it out unless it violates civil law.
Someone more learned than I might disagree. If, in fact, Mr. Awad's will was written to be carried out per Sharia law a local probate court might well say they don't have proper jurisdiction to carry out the actions in hiw will or to rule on it with or without SQ 755.