did you already try to delete SAP* in USR02 and logon with password PASS ? When this doesn't work as well, an OSS message might really be necessary, because the client will be in a very inconsistent state at the moment.
Are you running by any chance 4.6x ? What is your kernel-level?
I scheduled a job to delete a client using SCC5 last weekend. The job was cancelled after about 12 hours with an error - Run-time error "OPEN_DATASET_NO_AUTHORITY" occurred. The dump said "No authorization to open the file "/usr/sap/trans/log/CC000006.PRD".
The job was submitted under my user ID originally. Now I want to get back to SCC5 screen but I have lost all my authorities to all the transactions. I tried to do the same thing with user ID SAP* and DDIC and it seems like they both lost all the authorities as well. I went back to the DEV system and refreshed my user profile (which still has *SAPALL set for the deleted client) using SU01 and it still did not help. What should I do at this moment? Please help. Thank you.