I do not see the Shrine coming back as a recognized body in Arkansas at any time hereafter. While it was first probably a clash of personalities, things have proceeded over the past three years to make an extremely difficult task of bringing the two bodies back together.
There are several letters of clarification issued by the various Grand Masters that no Mason within the GL of Arkansas can simultaneously be a Mason and a Shriner. The most recent letter puts it pretty plainly that you must choose -- you can be one or the other, but not both, and establishing lodge membership in another grand jurisdiction doesn't make any difference -- our obligation requires us to follow the rules within the grand jurisdiction where we are at the time. If you are a Mason based or located in Arkansas, and participating in Shrine activities, you're stepping over that line. And yes, the Digest does provide -- in writing -- a penalty of expulsion without the benefit of trial for those violating this particular rule.
It's not at all a matter of who the Grand Master might be; and that office has turned over 3 times since this problem came up, with the ruling being upheld each time... And the Constitution does give the Grand Lodge the authority to decide what is clandestine within its jurisdiction, and what is not. The original December 2011 edict, as well as the initial round of trials and expulsions, was ratified at the 2012 session of the Grand Lodge, and the decision that Shriners International is a clandestine organization within this jurisdiction is now embodied in the Arkansas Digest of the Constitution & Laws, at Sect. 2.1.42. Subsequent expulsions were approved at the 2013 and 2014 communications by large majorities.
So, at a minimum, it would require an Arkansas lodge to present a resolution to a future convocation of the Grand Lodge of Arkansas to withdraw the current provision in GL law, and recommend the Shrine to be granted fraternal recognition as a Masonic Body under the qualifications set forth at Sect. 2.1.41. A GL committee (likely several committees) would subsequently have to report favorably, and the resolution approved by the Grand Lodge in its annual communication. Getting even a simple resolution through the grand lodge in any given year is a major undertaking these days.
Scimitar and Sahara Shrines in Arkansas no longer meet the criterion for Masonic bodies, in that they admit expelled Masons and non-Masons to their tyled meetings. Since July 2013, with the permission of the Imperial hqs, they have admitted a sizable number of new nobles who are not Masons at all. This alone precludes fraternal recognition under the Digest of Laws. They would have to conform to the expectations of a Masonic body in order to be recognized, which conditions were laid out and certified to in the previous Digest, repealed in 2012.
If, somehow, all the discord between the two organizations suddenly evaporated, they could not be rejoined, as the two temples here are no longer Masonic organizations. And for the two temples' parts, what are they going to do with all their new members? Expel them all because they aren't Masons, and weren't required to be when they joined?
With the admission of expelled and non-Masons to the temples here, the GL of Arkansas is at this time simply upholding its obligation to "guard the West Gate." I make no attempt to argue whether anything is "right" or not, but just a simple statement of what the local rules are in this case. At at this point in time, there isn't a simple or happy solution for either side.