Snape and Dumbledore on the Tower: A Defense of Snape

[finwitch]

No: HPFGUIDX 165744

Finwitch:
Just adding my theory here.

There were, quite simply, two spells.

One: the green light, which Harry has identified as AK, cast by Snape.
That it's jet rather than flash is a matter of perspective.

two: the spell that moved Dumbledore.

This *could* be cast by two persons, Dumbledore himself (on purpose),
in which case the spell was still in effect when the green light hit him.

 - or, more likely, it was paralyzed Harry, desperate to save
Dumbledore, doing uncontrolled magic, which was the only way he could
even try, straight out from a powerful emotion. That's how Aunt Marge
happened, anyway... I am curious nothing like that happened at
Hogwarts, though - but, it being on the moment of the death of the
Headmaster as his spell on Harry ALSO ended -- maybe Dumbledore had
cast some spell on the castle to prevent that sort from happening?

Finwitch