One way to fix:
Lift the plant from the pot.
Examine the root mass to see where material needs to be shaved.
Shave roots and soil until the plant can be stood upright in the pot.
Fill in any voids with fresh media and water well.
Better way:
Root congestion is an insidious robber of your plant's potential in terms of growth rate, vitality level, yields, and it's ability to defend itself against insect herbivory and disease pathogens. The only way to completely eliminate the limitations imposed by root congestion is to do a full repot. Potting up to a larger pot only eliminates a fraction of the limitations. A full repot includes bare-rooting, root pruning, and a change of soil, and it removes ALL limitations imposed by root congestion. If you do a full repot in the spring it would be a small matter to return the plant to its existing pot and reorient it so the trunk is in a more eye-appealing position - 2 birds with a single stone.
Al
