I thought this might be the case which is why I asked two shows in a row (Thank you for answering Steven

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Any experience that a player gains that contributes to the adventuring level will remove corruption. This includes crafting and although not mentioned presumably gathering and questing, essentially anything experience gain.
I am still processing the scenarios for this. What does everyone think? I feel like the immediate discussions will be turning in quests immediately after turning red or running to a freehold house and crafting away. I am not immediately for nor am I immediately against this idea. Still processing.
This is also means that like gathering experience, crafting experiences appears to increase your overall adventuring level, so no level 1 master crafters.