I purchased a duranta tree that was badly pot bound, so I teased out some of the roots and cut away the circular roots. It was blooming when I took it home but now all the leaves have dried up but they're not dropping. Is there any hope for a comeback? Thank you
Pruning the roots was likely to much stress for your plant.
Gently pulling out the bottom roots would have been the only necessary treatment before placing in a larger container with a good quality, well draining soil.