Litespeed saddle clamp question

[Phil H.]

I'm almost embarrassed to ask this question, but I've got a Litepseed Tuscanny with a saddle clamp
like nothing I've ever seen before. I desperately need to change the stock saddle that came with it
- what's the secret to disengaging the saddle rails from the clamp once the retaining bolts have
been loosened?

Thanks

Phil