Does "query stgpool <stg pool name>"  or
     "query volume <tsm disk volume>" shows "PCT Util" greater than 0.0?
If it is, then you have to find out files on volumes and delete these files.
Use "query content <disk vol name>". Once PCT Util is zero, you should able
to delete volumes and stg pools. To delete file spaces on these volumes you
have to use "delete filespace <node name> <filespa>" from server or from
client you can delete individual files.

Once volume is clear, you can remove it without any rc 13.Hope this solves
your problem.
Thank you,
Bandu Vibhute,
Bestfoods Baking Company,
55 Paradise Lane, Bay Shore, NY, 11706
Voice: 631-951-5212, Cell: 516-702-0323