While I was playing Halo Reach forge with my friends, testing out stuff, trying to find glitches and new ways to do stuff, We discovered that if you hold on to the back or side of a Wraith or Scorpion, fall of the edge of a cliff or platform in the air, and then let yourself fall to the ground and explode, the person driving or in the gunner seat will die, but the person holding on to the back or side will survive, often without a scratch (unless the tank topples on you after the explosion). Another one we found is that if you get in a vehicle and then you fall of the platform or cliff and fall to the ground, then you jump out when you are near impact, you won't die. However, this needs to be practiced if you want to do it correctly. Jump out too early and you will break your legs and die. Jump out too late and you will explode before fully out. I suggest using this glitch with mongooses, ghosts, and warthogs, as it takes less time to get out.
If by "hold on", you mean "board", then yeah, it's because they wanted you to be able to board and kill vehicles without dying in the resulting blast.
Any glitches for properly removing the hogs turret? (other than the kill ball method, it on knocks of the gun part)