Yeah, an abrupt ending, but I love the bit about how the "hand of the other" played into this, between Harry fabricating that wand and putting one of his hairs in it, it definitely was "by his hand", even if not his physical hand. I'm sure Tommy-boy will appreciate the irony involved. :D
I'll most definitely be looking forward to the sequel as the British ministry starts to rebuild and finds that most of the best people they want are overseas and have no desire to retrun.