I'm not impartial and I won't pretend to be, and whilst my primary reaction was one of amusement, I don't think the 'passionate' argument washes with, not for a manager who shouldn't be involved in on-field action.
Players, fine - it's understandable if not always excusable, but the manager should be a role model to his players on how not to lose your cool. Pardew's pattern of over-stepping the mark is more than a bit daft at this stage.
Most fans hate the intimidation Ferguson used on officials, but at least he didn't physically get involved (he just instructed Rio to run the length of the pitch and get his players to crowd round refs). Pardew is a moron.