It seems that my problem has to do with being offered and accepting a new command (Balao) before it's actually available.
Anyway, loaded a save just before docking, refused the new command, went on two more patrols and then in late April I was again offered a new command - Balao, and this time I wasn't transfered, I remained in Pearl. Went on patrol with my new sub, ended, medals, party, no retirement!
Problem fixed in my case.
PS - I can't WAIT to start a new career in the Asian theater and experience all the exciting bugs all you guys are experiencing
