Another instance of this just occurred. As before, I selected "reap" and this appeared in the Chatterbox (verbatim):

You said "I've reaped your node [id://1150733]. Reason: [[hippo]]: Abusive " to ralph2014

I checked in Message Inbox (which I hadn't thought to do when this first happened) and, constraining to:

Showing messages [X]From [ ]To kcott
([ ]not) in folders [ ]Inbox () [ ]Archive (162) [X]Deleted (1)
constrain by content: [      ]
and/or by user [      ]
[download]

I see one message (again, verbatim):

told root Reaped node at: Reaped: Re^12: threads, forks and SSH because [hippo]: Abusive

Is anyone looking into this? If so, is this additional information useful? Would any other information be helpful?