Kitarkus,
Your guitar is significantly devalued, maybe by a third. The guy should have told you, too. BUT:
1) Some necks are hard to steam-out, especially most Guilds and some Gibsons from the early '50s. Martins are usually pretty easy necks to steam off, by the way, because the dovetail slots are consistently in the same place, so Techs know where to stick the steam needles. Not so with Guilds. They are always a surprise. Even knowledgable luthiers can screw Guilds up.
2) My luthier split a side on an early '50s Gibson SJ because the neck would not pop out easily. The owner told him that it was okay, then came back later and demanded $700 in repayment. The luthier paid him back, but never worked on the owner's guitars again.
The owner even told me, "Hey, ....... wont work on my guitars anymore! How come?"
Me: "Because you made him pay $700."
Owner: "But I want him to work on my guitars!"
Me: "You should have thought of that before you made him pay. Everybody told you not to do it."
So, if you want to use the same repair guy again, you ought to think about what you really want to do. I'm not saying you should use him again, but if you do, think about it. If you like him, maybe he owes you a big credit on other repairs?
Other folks will be along soon, good luck.