Frankly that stage still works fine without it, just add in the climb to Latzfons via Feldthurns at the start instead and it's still great. Würzjoch/Jö de Börz from that side is a really underrated, great climb.
That said, I looked at it again and there's maybe one really sketchy corner, IMO you can still use it. That side of the climb that you are using, 7.5km at 11% is something I've mainly experimented with when thinking about stage finishes at the ski station in Vals afterwards (and Würzjoch via Longega/Zwischenwasser before, I love that climb as much as I hate Furcia from the Olang side (irregular climb and really exposed to the sun). That said, Rodenecker Alm from Mühlbach is also nice, 11km at 9% is a good climb and the last time I did it the heat was brutal (38°C down in Brixen)