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Hi Ard,
The Spur that you have left on the right hand side is too low and leads to you losing a significant amount of living wood above.
So the suggestion is to stay at the end of the top right hand branch that is in any case below the bending wire.
If next winter you choose to cut the long spur that you left, you will indeed make a wound on the sap flow but leaving the right amount of spare wood (twice the diameter of the two year old wood), you will protect the plant and the sap flow from deep dieback which is negative for the plant. The loss of living wood in this case will be minimal.
Other wise now that you are ready for the shoot selection/green pruning (suckering), you can remove all the shoots coming from this long spur, so the cane will be already dry this winter. You can easily remove it at the base respecting the crown/basal buds (the long spur will remain as one year old wood).
Hope this helps?