Remove chat is a feature that allows Ops and above to dynamically and instantly remove all previous chat entries from a specific nick from view in the mibbit client and widget. It also removes text from the Recent Chat buffer. Note: This feature will only effect mibbit client and widget users. Users accessing your channel from a different IRC client will continue to see the chat that mibbit has removed.
There is no way to recover the text once it is gone. New input from that nick will still be displayed.