I used to really love the weirdness of the ending, but... *Spoilers*
I thought about it all and it really DOESN'T make sense. Wouldn't someone come to look for Tyler and Alice? And even then, why would they release the Grandma into the care of Ghost in the first place?
Other than a few inconsistencies, the ending is extremely odd and I love it, even though nothing can beat the emotion of the first film's ending.
Julie, you're not responding to my maleness!