Saddle getting in the way when cornering on MTB - what to do?
I believe popular advice for MTB carving is to drop the outside pedal, rather than keeping the pedals horizontal.  If you then dump your weight to the outside pedal (off your bars) you can lower your center of gravity some and in the case of pumping that weight dump, increase your traction.  While keeping your pedals horizontal for obstacles increases your clearance, it isn't what you want cornering.