Well, Christmas went just fine. Brother showed up right before lunch to much fanfare. Mom and Dad were very surprised and while Mom didn't want the rest of us to feel bad, you could tell that Ted being there "completed" the holiday for her. So I'm happy for her, in that respect. Dad was pleased, too.
Two minor "bumps" along the road:
1) Because Mom and Dad didn't expect Ted to be at my house, they didn't bring any of his gifts. So while the rest of us opened multiple packages from Mom and Dad, Ted opened two from Sis and I, and that was it. You could tell that this was an issue that hadn't occurred to Ted. It was more than a little awkward and I felt bad for him, sitting there with little to open, while the rest of us had a big pile of gifts. But, at the same time, I think it was a lesson in the little practical details that get bent all to heck when "surprises" get thrown into the mix.
2) My mom took some time (about the time we finished opening presents) to recover from the shock of Ted being there. She turned to me with an unhappy expression and said, "You knew the whole time that Ted was going to be here and you didn't say a word? I don't like that at all."
I used the calmest, most serious tone I could muster and said, "This was not my idea. If you're upset, discuss it with Ted."
She snapped out of her momentary bad mood and the rest of the holiday went fine.