Triple Allemande is actually a call. This sequence is not 'technically' correct since after an Allemande Left the Men should be facing counter-clockwise and the Ladies clockwise. Perhaps replace the second Allemande Left with a 'Turn Corner Left'.
There's a similar old time dance, named Arkansaw.
Those who can means "Those who are normal Couples".
A use of 'Separate Around 1' where you neither make a Line nor come into the middle.
The "Circle To A Line" is a full-cicle movement instead of a 1/2-circle movement.