best way to decock it is to load a pellet and shoot it at a trap:)
You can remove the anti-beartrap mechanism pretty easily, just one circlip and a little sheet metal arm I assume if it's like my other Gamo's, but I wouldn't suggest it unless you NEVER EVER forget to hold onto the barrel. Would hate to see anyone lose any teeth, smash a finger, or worse yet damage their gun. Pretty obvious what to remove if you are mechanically inclined, but again I do not suggest it and I have not done it to any of mine for the same reasons as above. Take care and be safe!
Dan