Unlike most mods around here, flossing is 100% reversible. It'll probably be easier to undo it than it will be to do it, in fact.
It is fairly easy to undo if you have the beast apart. Only taking the keycaps off you will have to fiddle with it a lot more.
If your floss sections are as tall as the springs, you can pick them out with a sharp pair of tweezers. Below the top of the spring - much harder.
My experience is that perhaps up to a third of them will fall out if you turn it upside-down and shake, but many will be fairly stubborn. Straightening out a small fish hook is probably the most effective, but don't pull too hard and stretch the spring.
Unless you simply like the loud ringing overtones, you are likely to be happy with the mod. An un-modded F is overbearing to me.
Remember that when you are inserting the floss, if you don't hit it on the 1st or 2nd try, you will probably have flared out the weave and will need to cut it back to get a tight fresh edge.
