That is not cheating nor scripting. He is simply using the same way you guys bind your mouse wheel to jump.
sector don't worry, i am pretty sure you will get unbanned. If they want to stop you from doing what you are doing, then they need to stop players from bunny hopping. That ain't gonna happen.
I would have to agree with this guy, groundstrafing is possible (not that i can do it, i still suck) yet just a very uncommon skill. It could e that he is indeed scripting, but without somekind of ingame test like an exec most of the times you can't even know if he does it legally or illegally
So yes, i would go for unban. About admins banning him, just take a nickname which the community know for being able to groundstrafe so the ones unexperienced in scripting etc won't press the ban key

And guys, there is no such thing as illegal strafe, or am i dumb

? It's just very hard
Fix would indeed be aa 10 as nobody would be able to strafe anymore, but that's upto others
Pim