Regarding title for new owner

I literally just privately sold my Prius. I printed out a bill of sale and all information of both parties is on there (each have a copy) along with my title and release of liability filled out as well.
The buyer met us at our bank and we verified the cash and deposited.

Here's my question, the buyer has the key & title but didn't sign the title because he noticed that 1 of the 2 names is misspelled by one letter. Said he didn't feel comfortable signing it because he doesn't know what the DMV is going to tell him.

He's going away for two weeks and asked if he could stow his car here at our residence which is fine, but now since he doesn't personally have the car in his posession, should I still sign our release of liability if he didn't sign the title? He signed the bill of sale and his name for release of liability

 

I have to notify dmv within 5 days of the sale and what not, so if he has the title in his possession

We've already parted ways. Like I said the car is here and we have the paper form for the release of liability and he the title. I'd like to do the release of liability online through our dmv, should I not do that then?

 

Because we don't have another means of getting around on VERY short hand notice we weren't able to go to the dmv. We barely caught the mistake when we got out our title of the files today. Now I'm just wondering what problems he is going to run into once he gets to the dmv because 1of the 2 registered owners name is misspelled by that one measly letter.