UPDATE: GM Xynwen announced another update to Wand Combiners: Use CLENCH with one to clear out the spell and all charges in the wand.
Text of Discord Post follows:
GM Xynwen
Wand Combiner Update
on 7 October 2022 8:15 PM
from the Official GemStoneIV Discord
on #general-announcements channelWand Combiners: You can now CLENCH to clear out the spell and all charges from your wand combiners.