I know I’ve said this a long time ago, but I think this is a film that really doesn’t hold up to scrutiny very well. It’s great when looking at all the stuff on the surface level, but when you start peeking underneath, it’s really got a lot of loose threads dangling that do nothing but beg for more questions without answers - essentially forcing one to either go along with everything on the surface (or not).
I think the glass shattering is something he did. The only thing I really gleamed as being a manifestation of the spirits was the cold temperatures.
As for Malcolm and what he’s dealing with, I can see it being the past (represented by Vincent Grey), how things are changing (his understanding changing due to Cole - not everything can be rationalized/answered via psychology), the present (ok, I believe in ghosts now and asking Cole what he thinks they want which involves the little girl’s death), and finally the future (accepting he’s a ghost and letting go, telling his wife that tomorrow things are going to be different.)
As for Cole, I can see memories (he talks about his father and his leaving), desires (can it be something I don’t want - I don’t want to be afraid - also doesn’t want his mother to see him as a freak, wants real friends, etc.), impulses (he IS afraid), contemplations (knowing the facts about the ghosts and why they’re haunting him, he’s better able to deal with them - as evident by the biker death he kind of shrugs off - and is able to communicate with his mother as a result, giving her the proof she needs to accept him as he is).
That being said, I agree with the concerns (memory/past).