That's pretty wild, I stand corrected. My V4 was last registered in WA, I didn't know CA had a different process for that. In WA, they will fine the .... out of you for not registering, but only when you go to register it again. If you never register it again, they don't really care. Had a buddy buy a car that hadn't been registered in 6 years, previous owner never got fined, but my buddy had to pay for 4 years worth of registration (they nicely waived the extra fees).
So it seems like the only option is non-op status. What a cancer state.