"Morally" does not exist in this case - it was unfortunate and a tragedy.
I just question how many times you have parked on a double or single yellow line for a minute - and an 'unfortunate incident' like this could have happened. We ahve all done it.
In my local city, Truro, the following happened this week. A massive snarl up on Lemon Hill because of an ice accident - a bus trapped at the very bottom. The driver goes to the Gents opposite, climbs back into the cab and 'bingo' he is out of this world with a massive heart attack. Imagine if he had been moving when this happened and it wouldnt have mattered wher one was 'parked' or standing..........its just the risk of God....
For reference:
http://www.thisiscorn...9-detail/article.html