I don't think that would be possible.
To do a search on PBBans you have to enter a Captcha. Also the URL for a player's ban details does not have their name in it.
If you could get the GUID that you might have a chance but when I try it no matter what I do it keeps saying the Captcha has expired.
You could do this with Metabans.com however.
http://metabans.com/search/
[player name]
But even that's not perfect