I had a similar break on a new guitar I shipped last year. Almost identical break. The difference being my guitars bolt on the fingerboard extension as well, so I could work on the neck separate from the guitar. That being said, I made a jig based on Doug Propers design to hold everything together while gluing the heel together. You could probably modify the jig to fit with the guitar if freeing the fingerboard is too big a hassle. In my case, I used epoxy for the reglue, but I did that because part of the original glue joint was exposed, so I wanted to make sure I had good adhesion. Yours looks clean enough that titebond would work too.