I don't even think he'll be banned for spamming: posting the same thing after you deleted it could be considered a bump.
A bump? It might technically be considered that (even if it's stretching the definition), but it's not a bump in spirit and I think we all probably can agree on that.
What if we tag stake.com, their manager and the participants for spamming?
That would be considered Trust abuse.
Trust abuse without consequences, though, unless one or more DT members decided it was so egregious that counter-feedback needed to be given or the person(s) who tagged those involved with the post recycling needed to be tagged. Sometimes you just have to use the tools at your disposal. Having said that, I'm not tagging anyone for this but nor would I harbor a grudge against anyone who saw fit to do so.