replace laces in Keen Sandals?

Has anyone replaced the laces in Keen bike sandals?

How do you open the clippy toggle thing to insert the new laces?

Slide a SMALL flat screw driver under the edge and carefully push the piece that the laces are in forward.

http://www.youtube.com/watch?v=1ppHiyOvASE

This should help :)

This looks great! Thanks!