Another thing to look at (prompted by CliffordK's post) - if the seatpost is bent, your seat is no longer where you originally set it. Looks like the tube was pushed back. If so, the tube and seatpost will no be at a alightly steeper angle, the seat further forward and the nose down a touch.

In my racing days, I bent a seatpost back (flying down from Stowe, VT's Smuggler's Notch at close to 60 mph, hitting a frost heave I didn't see until it was 20' away. Got kicked in the butt two feet in the air. Everything came down straight. But a week later I raced the very hard state championships and boy, did I pay! That very slight re-position of the seat was a killer!

Ben