I had four puncture wounds and a long laceration. No flesh was removed, but a lot of damage was done.
I got to the ER at about 12:30am and got home at 10:30am. I called the woman who was fostering him when we got him and explained the situation. She said she'd take him back -- no problem. I put on his leash and took him to her house. She was very understanding, and after seeing my face and my demeanor (I was/am torn up about this) realized I had tried my best but I was not adequately equipped to handle this dog. I'm sure he will be perfectly happy at her house with her pack of dogs.
Bilbo (she still calls him Bullet) has a new home in Ronkonkoma -- I'm sad. But I know I did the right thing for the dog, myself, and my future family.
I need to go to bed and get some sleep.
Thanks for reading. Pet all your wonderful fur babies for me. I'm going to go snuggle with Ruby now.