Good new/bad news! The longerons were not twisted to begin with. Bad new is that instructions said not to use CA glue on basswood so I used 5 minute epoxy which rules out using a debonder. Good news is that the epoxy did not hold that good and I was able to coax the braces out. Now its a case of how many of the braces should I remove to get things back to "normal". Good news is that I have plenty of Basswood left.