Ok we all surely remember the "Be Invisible" trailer released for Crysis 2 right?

Right.
Well it turns out, you cannot do the bit where the player throws the c4 charges behind the C.E.L.L. personnel. I tried and when I tossed the c4 charge I de-cloaked and stayed de-cloaked.... and the alert level was raised and I was killed. Because I was too busy wondering what happened. Did you guys disable this in veteran mode? Cause I've got all the unlocks. I should be able to do what was shown directly above. After all "What you see is what you play" right? Or did you guys use the infinite cloak config like in Crysis and Warhead?

I was wandering if it was possible drop c4 without decloaking

Crytek Lied to us, oo what a suprise.

Crytek Lied to us, oo what a suprise.
They didn't lie, it could be a new bug. After all, you can still shoot while cloaked.

"WARNING:DO NOT TRY THIS AT HOME" is clearly the subject of the matter.

Haha, and they also show shooting down people, with a machine gun. I'm pretty sure even with a silencer and stealth enhance, it only takes 3 shots to drain all your energy.

Tried it on Regular:

You can place ONE C4 with Stealth Enhance active. You will lose 95! ENG.

Max shots from a longarm (no pistol) all with Stealth Enhance and full bar:

SCARAB: 5.
FELINE: 6.
DSG-1: 1.

Pistols:

M12: 6
HAMMER: 3

Hope this helps.

You can break cloak once if you have full energy, and if in doubt quickly unloak and throw it then recloak.

I garuntee you got spotted by someone else.

Sadly I agree... I was expecting to be able to do it exactly shown as shown in the trailer....

If you "decloak - shoot/throw explosives - cloak" fast, it is as if you hadn't decloaked at all.