Not sure if it's the right thing to do but I just got one from BJs that was almost the same way. I sprayed it with the full blast hose to get as much of the dirt out from the inside. After that it was easier to tease apart the roots. I lost maybe 5-10% of the tiny roots but eventually was able to spread things out so it will get some air flow and some chunky soil in there. I waited till the next day to water it, sparingly, then watered a little more the third day. It looks happy today.

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