Just to update everyone the good/bad news is there has been no change good or bad. The bird that was the worst off still cannot stand on its on it just sits and drags itself around. The other bird still can get around but its mobility is still very unbalanced and clumsy.
I'm very sorry to hear there is not improvement.
Some people do make a sling to get the bird more upright and sometimes that makes them more comfortable.
Since these are part of your breeding stock (flock?) will you still use them if they recover? If you happen to lose one, it would be a good idea to have a necropsy/testing by your state lab, just for confirmation of Marek's along with any other underlying conditions that may later impact the health and well being of your breeding program.
