well as i see this , he insulted google and google done it too (no offending , just having fun ) gunabuse deserves a ban but not permanent
gunabuse must be solved in these two ways , first make sure if someone selfed then you transferred him back by amx_transfer "name" CT , you must tell him not to gun abuse and disarm him , if he was known (not knew) tell him not to gunabuse and i think he deserves a 1 week ban or less , this is my opinion , take whatever is good from it
Adios amigos
EDIT : i talked to fredin , he said proto quitted him for gunabusing , and he apologized so why you banned him ? o_o
if it was for insulting , this must be in unbanned i think