Well, WFRP as I recall is a fairly lethal system.

The agitator, being less combat-ready than the others, will likely die on combat.

Problem solved.

Is he better in social situations? Get him to do some more social situations. Find his strengths, play a bit towards them, that way he serves a purpose outside of combat. I've played a shitload of non-combat-oriented characters in WFRP. Shit was so cash.

I wrote a long, well thought out reply once. The server shenanigans ate it.

Here's the gist of it:
1) You can make the agitator a fighter: either by taking BS, Flee! and a buying a crossbow or taking WS, Streetfighter and buying some armour.
He can later on continue to Zealot, who is a fighty class and can be upgraded to Judicial Champion, who is a fighty character supreme.
2) Make use of his talky abilities. Versatility never hurts, unless you are dungeon crawlan (= doing it wrong).

>How do you solve such problems in lolrandum RPGs like WFRP?

uhm, you CHOSE. what a radical concept, choosing.

set a theme for your story/campain and actually make characters that works with that theme n some way. let the players talk through their concepts and ideas with the GM and each other.

in teh end, shape the campain after the players and their characters, don't let yourself get tied down by what any book or "rule" says, experiment.

>How do you solve such problems in lolrandum RPGs like WFRP?

A) You don't have to roll. Rules are just suggestions, nothing more.
B) ROLEPLAY! Act. You're not your weapon, you are a person with dreams, opinions, personality and a full life with a history, act it out!