k, I'm doing this.
I snapped this bit of code onto the horse ray (I like the thing, OK?)
function TumblerProjectile::Damage(%this,%obj,%col,%fade,%pos,%normal)
{
%player = %client.player;
tumble(%player, 1);
}
I start a minigame. I use eventing to spawn a projectile that hits me and explodes. I'm not tumbling at all.