Using 2 staples isn't going to work well because they are tiny and aren't strong enough.
So here's the method I used to remove the pins when sleeving. It was also in the tut. At first, it took a bit of time to get used to it. But after a few pins, it was like poke-turn-poke-turn.

A mini screwdriver... which comes in a box of 5 different sizes. (can easily get it from any hardware shop, pasar malam. Better qualities will be a few ringgit, and those cheapo ones... sometimes only RM1 or less.)

So the one I used was the smallest. The tip is about 1.5mm.
[attachmentid=225007]

Then in this pic, you can see the tip of the screwdriver in the 4-pin
[attachmentid=225008]

| - flat head screwdriver
[] - pin
What you gotta do is, insert the screwdriver beside the pin like this:

|[]
then... turn the screwdriver 90degrees to -[]

The screwdriver will push the wing inwards. Repeat same steps on the 2nd wing of the same pin, then you can remove it easily.
Remember to push out back the wings before inserting the pins back. Good luck.

PS: I saved RM35