Hi Jun08,
I've heard Hawleys can be adjusted to actually move teeth, so it's possible that your ortho will be able to use your retainer to correct the gap. One of my friends, whose treatment time went way over the original estimate and was sick of wearing braces, requested to have her braces removed before her treatment was technically complete. Since she was close to the finish line, her ortho was able to continue to make tweaks using her Hawley.
Hope it works out for you
