Seat lock stuck problem

[dave]

Turn the key, pull the hook down and then: while holding the seat; push, pull, twist, jiggle, swear and the seat will eventually disengage.

if that fails, push, swear, pull, swear, twist, swear, jiggle, swear, rattle, and swear again. Good luck.

if that fails, push, swear, pull, swear, twist, swear, jiggle, swear, rattle, and swear again. Good luck.
This is the same procedure that I use