Should it be expunged though? They've indicated they were aware it was quite clearly a phishing attempt, but they still accessed the link. If the test was to see if a user would try accessing the link, then this user failed the test. Why should that be expunged?

Curiosity shouldn't preclude security, and intent shouldn't preclude policy if the operator operated knowingly.

This isn't to attack maxk42, but to engage the question head on.