Hey Larry,
Glad to hear you are finding PhotoFusion useful!
So by remove PhotoFusion do you mean to delete the waypoints with photos in them? The placed photos are just waypoints so you can go to "File Properties"->"Waypoints" and even sort by 'type' to see all the "Photo" ones, then shift click to select them all and hit the delete key.
I could see having a handy 'remove button' in the PF dialog, I guess, especially if you are doing multiple tries or just want to clear the file. Wouldn't be too hard to add. Thanks for the post.