Delete custom storable class & custom table

Hi,

We created a custom storable class and its definition using the pin_deploy replace command but due to some reason we need to delete it. We found an opcode PCM_OP_SDK_DEL_OBJ_SPECS for the same but it requires the table to be manually deleted. Also we found this note "If you delete a storable class that has already been instantiated, you will corrupt your database. For example, never delete the /account object. Because of this danger, we recommend that you do not use this opcode on a production system." What do we interpret from instantiating the class. Please suggest how we can proceed to delete the storable class and its associated custom table