Hm... Do something like this; (This is LOTF, but you can probably find the variable yourself, as I have not yet looked into the 5165 source.
Code:
if (MyChr.Model == bigmaleID)
MyChr.Model -= 1;
if (MyChr.Model == bigfemaleID)
MyChr.Model -= 1;
RemoveItem(ItemUID);
That should work, just find the model IDs. This would make it smaller(I think).