I'd spread the roots and give it a bigger pot.

Hi, thanks for your input but the roots have far too tenuous an attachment on such a thick stem to be disturbed at this stage & the pot (8" x 8") is appropriate for establishing a rooted air-layer this size. When this pot fills with roots & the top makes substantial new growth (about 12 months) it will be potted up accordingly. I've had a fair bit of experience growing rooted Wollemi cuttings & nothing kills them quicker than over-potting. If you take a look at the pics of the root-ball you'll notice that the vast majority of the roots are straight down with very little horizontal orientation or coiling thanks to the deep grooves in the bottle acting as very efficient root trainers. The small secondary roots clearly visible will grow to the sides of the pot which has root training ribs & then head down making a strong sound root system. The tree which the layer came off & another Wollemi planted 6-7' away (now well over 7' tall) were kept in 8" pots until 3' or more tall then potted into 16" pots for a few years before planting out. Both had very healthy well branched root systems on planting. The Wollemi comes from a rocky debris rich site & seems adapted to starting life with restricted root space as they recover from 'root binding' without ill effect or instability.

I see plenty of circling and the dominating vertical orientation produced by confinement to the bottle is also a deformity. All that would be necessary would be to swish it around in some water to loosen things up, use reasonable care when handling.

Myth of Fragile Roots

https://puyallup.wsu.edu/wp-content/uploads/sites/403/2015/03/fragile-roots.pdf

Like I said "thanks for your input" . . . . . I'd point out there is only a small amount of root circling at the very bottom of the root ball & it has only just begun. I have detached this air layer at the optimum time & potted it in the most appropriate manner possible. If you look carefully at the pictures you'll be able to see that most of the volume of the root ball is air filled porosity. The roots are quite brittle at this stage & any interference would be detrimental & result in damage. I disagree that there is any deformity in the roots, the vertical orientation of new roots couldn't be more normal as almost all roots naturally grow downward initially & the circling ones mimic the twists & turns the plant would perform in the rocky ground of the habitat. I fail to see what possible advantage there could be in washing the roots & breaking the microfloral connection to the medium. Any root tips that entered a rock crevice or dead end would twirl around until they found an exit naturally. So when you make yourself a marcotted Wollemi in a bottle play with the new roots if you wish but I'm happy mine is being grown in the best way it can be. Cheers mate. :)