I unwired two spruces today and I have to say that:
I missed a bit on the timing and in some places the wire bit quite a lot (see photo). I hope it recovers. Not the end of the world if it doesn’t, a new design opportunity ahead…
Last time I checked it was still fine, a couple of weeks can make a big difference. Watch your wire.
Unwiring, particularly the timing, is more important than wiring, you’re more likely to damage the tree unwiring it than wiring it. You may make mistakes wiring or it may not be super beautiful but most likely you’ll be able to get branches to where you want them to stay. If you miss the timing or don’t have the proper technique to unwire you’re likely to make more damage to the tree… and considering that every branch in your wired design might be important, if you loose one, you may have to rethink the whole design.