You should set your server up to stream to PBBans
From your log:
[02.26.2007 22:16:21] Screenshot /usr/local/games/cod/328218/209.246.142.107:28960/main/pb/svss/pb000074.png successfully received (MD5=951F0DD91D2105064AD0F1BB39B41142) from 10 ^1*^7{7thM}^1*^7CJ^1the^7DJ^1* [05dc4e6f845f1c5d77eb6967ba7e07a9(VALID) 24.229.143.211:28960]
The MD5 matches the screenshot that you posted above.
However, we cannot ban this individual because your server wasn't streaming to PBBans. So the MD5 could not be 100% verified because it could have been manipulated.
Best thing to do is setup your server to stream