Is this a healthy root flare? Plum tree from seed.

[RidingDutchman]

I recently started growing a Mirabelle plum tree from seed (seed was collected during our honeymoon, so it has some sentimental value). Its about 2 years old right now. 

When planting in the ground I made sure to properly expose the root flare, a couple weeks later I noticed it had quite an odd looking S curve, which I didn't spot or pay attention to while planting. It was not yet pot bound at all. Soil is loose and sandy.

 

Is this a sign of a root girdling or other problem? If so, should I dig it back up and try to prune the roots some?
I live in the Netherlands, middle of summer at the moment.

Would love to hear your suggestions.

[Otto77]

(Sorry for replying in Dutch here)

Ik zou hem niet opnieuw opgraven, en zeker geen wortels snoeien. Dat doet over het algemeen meer kwaad dan goed, vooral in de natte zomer die we dit jaar hebben. Hou het wat in de gaten, maar vertrouw er op dat de boom zelf wel aardig goed weet wat hij doet. Zo lang je in de bovengrondse delen niets raars ziet, zou ik de ondergrondse delen ook gewoon met rust laten.

[sime42]

Translation of above.

 

"I wouldn't dig it up again, and certainly don't prune the roots. That generally does more harm than good, especially in the wet summer we're having this year. Keep an eye on it, but trust that the tree itself knows pretty well what it's doing. As long as you don't see anything strange in the above-ground parts, I would just leave the underground parts alone."