Basically it's bad luck that gets a case remanded. It happened mostly in CA dol at that time.
To cut the long story short.. mind you the case was filed in 2001. My case was initially filed as RIR. Made it to regional. In a case that is filed as RIR the advertisement is very generic. When it came for review in Regional the DOL sent a letter to the company and lawyers (there are lot of CA cases who got such a letter, some were auto remanded, meaning cases got back to state SWA without asking for any clarifications from the company) as to why this case should continue blah blah due to changes in regional economy from the date that the case was filed (2001) to the date when it came to review (2003-4), asking the company to either readvertise now or send it to SWA for DOL assisted recruitment. (there were 2 more options it was called a 4 option letter, one other option was to withdraw, i don't remember the 4th) My company policy was that in cases where they received such a letter they would send those cases back to SWA. So the case went back to state SWA.
Now it will go thru the route of re advertising etc.. so when our cases will finally be reviewd/approved I have no clue.
Since your case made it to regional you are in a better shape.