OK... I went and looked at my hubby's saddle. The part you should be shoving "up" would be the strap with the holes in it..
The Blevins buckle strap...the one with the buckle on the end...PULL on that one. The fender should be attached to that one with some stiching and you don't want to mess up where the fender is attached to the strap...
I'll add pictures to show you how my hubbys saddle.....Ya, ya I know I said don't monkey with it but I know you're going to fiddle with it..... Moving fenders 001.jpg
^This is what you should see when you lift the fender. Moving fenders 005.jpg
As you can hopefully see, the strap that has the Blevins buckle on the end has the fender attached further up on it from the buckle. Moving fenders 003.jpg
This is how my fenders are attached to that strap...You don't really want to get carried away yanking on the actual fender because you don't want to damage this stiching. Moving fenders 006.jpg
The strap that I have my hand on is the one you want to pull down...sometimes wiggeling gently forward and back (pommel/cantle) while pulling will help it come down if it's been up for a while. Moving fenders 007.jpg
This is what my fender looks like pulled WAY down. You can see how the hole side of the strap (blevins still attached, I just took the hobble off) has slid up into the saddle to allow the fender side to come down.
Hope this helps...Just give me a shout if you need more help.....