Strip a strand of wire out of a brake cable and use a sawing action with the wire behind the badge pulling the ends of the wire down and back towards the back of the bike whilst sawing. Basically cheesewiring (not a word) the badge off. Hot glue probably will work but Evo-Stik may also work well.
It's a bit too complex and need paint behind it.
I'm thinking about masking off around it to keep a bit of the original paint as a panel with the badge on.