How to add back a rejected disk into same OCR diskgroup without FORCE Option

Hi,

We have Oracle RAC 11.2.0.4. Due to SAN connectivity error, our cluster went down unexpectedly. Once everything was up, there was one ASM disk rejected from OCR diskgroup. OCR diskgroup is configured as Normal redundancy. We would like to add this disk back to the OCR group. But Oracle support advised not to use Force option for OCR diskgroup. we checked and tried that without Force option disk cannot be added back. Its already one week we haven't got any solution.

Database Version: Oracle 11.2.0.4 (2 Node RAC)

Operating System: HP-UX 11.31

SQL> ALTER DISKGROUP OCR ADD FAILGROUP OCR_0000 DISK '/dev/oracle/asm_ocr21';