I've noticed in multiplayer that when I stick someone it takes 10-15 seconds to explode when stuck to someone. I think that is a bit too long of a waiting time for it to explode, I know that they should have a chance to remove it and all but delaying it THAT much? It should be at least cut in half down to 5 so that the person that can remove it has a small window of opportunity to get it off. I sometimes stick someone, die a few seconds later, and then after my 15 second respawn timer I respawn and finally get the sticky kill. What do you guys think?

I haven't tried it. I think that 8 seconds would be good though.

you can take it off? o _o so my screaming and running in circles while my teamates watched me in panic was a waste of 15 seconds? laaaame

No, only they can take it off, it just means your team mates weren't helping or probably didn't know that they could take it off.
I've never done it, so I don't even know how lol

Can't say I've ever removed a sticky grenade, but I imagine like everything else it would be hold F (or whatever the equivalent is on Xbox/PS3)
I remember reading somewhere that the timer is 5 seconds once it sticks, but it does seem like longer, so they may have lengthened it.

It's still fun to use though