When I first got my ST in June last year and started riding, I seriously looked as this as I was having trouble - particularly at low speeds - but the cheapskate in me held off. I then found a post on ST-Owners where the snapping effect can be reduced by removing the slack in the throttle cable.
All I needed to do on mine was to adjust it at the top of the cable (just below the handlebar are a couple of adjusting nuts built into the cable) - some need to adjust the other end of the cable (under the tank) if there's too much.
Ma Honda configure the installation with about 1/4" of slack - reduce this to 0 and it makes quite a difference. It's probably not as good as the FCE can make it, but I've learnt to control it better with the clutch. Even if you get the FCE, adjust the slack away regardless.
R.