Need to unglue/remove the pickup mount/frame (Fishman Triple Play part) from my guitar..

(Apology in advance if I picked the wrong forum)
 
(Selling my guitar) Need to unglue/remove the pickup mount/frame (Fishman Triple Play part) from my guitar..
(image can be seen in this URL: http://cdn.mos.musicradar.com/images/Guitarist/372/fishman-tripleplay-pickup-630-80.jpg)
 
What is the best way of removing the little frame underneath the strings without damaging the body?
 
Thanks in advance.