Well Phil sure looks happy. I doubt you'll be able to coil the bottom part of the stem around. Have you tipped it out of the pot to see just how deep the roots go, if it's root bound and to what degree ?
Have you thought about taking a top cutting and rooting it ? It would encourage to send out new shoots from the bottom, plus you could plant the cutting once it's rooted back in the pot and it would fill out the pot more.
