How can I remove/replace this CPU heatsink backplate (where the CPU socket is screwed)?

[Rodion15]

I'm replacing a motherboard for a HP laptop. I need to replace this backplate for the CPU heatsink to the new motherboard. I've tried to pull it out but it seems to be glued onto the motherboard.
If I manage to pull it out, should I replace the glue, double-sided tape or whatever is underneath?

HP G62-b80SS laptop.
Intel Core i3 CPU.

Thank you

 

[geofelt]

Use a hair dryer to apply some heat.
Often that will soften the sticky material.