In Cloudrunner Fortress, I can't figure out how to get the explosives to..

Inside the garden where the cage is you will find two boxes to the right of the cage. Destroy one, put on the sharp claw disguise and step on the platform. A ladder will drop down to the opposite side of you. Climb up the ladder, and go all the way to the right of the walk way, you will find a switch, activate this one and a lamp will burn at the entrance of a locked gate. Go right up next to the queen and on the left of her will be a stack of boxes. With a running start jump onto the boxes then onto the other ledge which is bloked by debris. There also, is another switch. Activate this one and the other lamp will activate, opening the locked gate. Once again put on the sharpclaw disguise, and grab the bomb. Go to the newly opened gate and then throw it in there, If you do this correctly it should go to the other side without exploding. Then throw yourself into the vent and you will be on the same side. Grab the bomb, and then throw it at the column, The queen will fall and give you a flute, your next task begins from there.