Cutting roots of European Olive in order to remove plastic pot

My olive standard ( girth @8cm, height @170cm) has grown through its plastic pot and through the broken path edge and into the ground. Would it be possible to prune/cut the roots without harming the little tree,? ( in order to release and relocate it to somewhere less shady)

The plastic pot is about 30litres and not flimsy.

Would be grateful for any thoughts from experienced gardeners. Thankyou.

 

Thankyou @Loofah . Would you say it would be best to try to cut the minimum amount of roots, and would you be inclined to wait until spring or some other time?

 

Thanks @Loofah.