AIPlayer weapon aim bug

function WeaponImage::onFire(%this, %obj, %slot)
{
    //echo("c4WeaponImage::onFire( "@%this.getName()@", "@%obj.client.nameBase@", "@%slot@" )");

    // Make sure we have valid data
    if (!isObject(%this.projectile))
    {
        error("WeaponImage::onFire() - Invalid projectile datablock");
        return;
    }

    // Decrement inventory ammo. The image's ammo state is updated
    // automatically by the ammo inventory hooks.
    if ( !%this.infiniteAmmo )
        %obj.decInventory(%this.ammo, 1);

    // Get the player's velocity, we'll then add it to that of the projectile
    %objectVelocity = %obj.getVelocity();

    %numProjectiles = %this.projectileNum;
    if (%numProjectiles == 0)
        %numProjectiles = 1;

    if (%obj.isMemberOfClass("AIPlayer") && isObject(%obj.target))
    {
        %vec = %obj.getVectorTo(%obj.target.position);
        if(%obj.aimOffset)
            %vec = VectorAdd(%vec, "0 0 "@%obj.aimOffset);
        %vec = VectorNormalize(%vec);
    }
    else
    {
        // getting the straight ahead aiming point of the gun
        %vec = %obj.getMuzzleVector(%slot);
    }

    for (%i = 0; %i < %numProjectiles; %i++)
    {
        if (%this.projectileSpread)
        {
            // We'll need to "skew" this projectile a little bit.  We start by
            // Then we'll create a spread matrix by randomly generating x, y, and z
            // points in a circle
            %matrix = "";
            for(%j = 0; %j < 3; %j++)
                %matrix = %matrix @ (getRandom() - 0.5) * 2 * 3.1415926 * %this.projectileSpread @ " ";
            %mat = MatrixCreateFromEuler(%matrix);

            // Which we'll use to alter the projectile's initial vector with
            %muzzleVector = MatrixMulVector(%mat, %vec);
        }
        else
        {
            // Weapon projectile doesn't have a spread factor so we fire it using
            // the straight ahead aiming point of the gun
            %muzzleVector = %vec;
        }

        // Add player's velocity
        %muzzleVelocity = VectorAdd(
        VectorScale(%muzzleVector, %this.projectile.muzzleVelocity),
        VectorScale(%objectVelocity, %this.projectile.velInheritFactor));

        // Create the projectile object
        %p = new (%this.projectileType)()
        {
            dataBlock = %this.projectile;
        };
        %p.initialVelocity = %muzzleVelocity;
        %p.initialPosition = %obj.getMuzzlePoint(%slot);
        %p.sourceObject = %obj;
        %p.sourceSlot = %slot;
        %p.client = %obj.client;
        %p.sourceClass = %obj.getClassName();
        MissionCleanup.add(%p);
    }
}

function AIPlayer::getVectorTo(%this, %pos)
{
    if (getWordCount(%pos) < 2 && isObject(%pos))
        %pos = %pos.getPosition();
    return VectorSub(%pos, %this.getPosition());
}