Good question. In theory, the tight strand would allow the twisty elbow catch to go well but yeah, having a loose strand adds some unknowns!
From the first arabesque shape with the tails held behind the back, pull that wrap around the thigh tight. After the superhero roll, when the thigh gets wrapped again, pull the tails across the back to adjust any slack in the S wrap before wrapping the thigh.
Another place to adjust slack could be when prepping for the twisty elbow catch, coming out of the S wrap. Pull the poles to check the slack coming out of the knee hook and when wrapping the feet, treat it like a climb to see if you can grab the loose strand and slide it down while straightening the knees for the final initial drop prep shape.
Happy training!