I doubt this needs saying, but this advice is predicated on the fact that you should be off the saddle when cornering hard.

I am a proponent of maintaining equal pedal pressure (and therefore level pedals) as much as possible unless it's absolutely necessary, e.g. super slick/muddy and/or hard off camber. If it's a left hand turn, rotate the hips counterclockwise, or in other words, the left hip drops toward the rear of the bike, and the right knee comes close to or even touches the top tube. The bike will always go where your hips are pointing, and rotating them helps square off the corner so the front end doesn't get out in the loose stuff and send you blasting off into the prickers. Also, if your hips are rotated, even if the rear does get loose and kick out on you, you'll still end up centered over the bike and in control.

Hope this helps somewhat and is relevant to the type of situation you describe.