Given that tire pressure, I'm surprised you made it around the corner at all!

I'm a big chicken when it comes to cornering--granted, I'm a big chicken all around. Outside pedal down, and I lean the bike, not me (though this depends on the corner). And I slow wayy down--like 8-12 mph if it's a tight corner (like the S-curve on a trail back home).

And +1 on the helmet. If it's restricting your vision, something's wrong.