Pattern is full - glide ratio should be about 18:1, or slightly better.
For every 1000' of altitude you can go 3 n.m. So from their peak altitude if they lost ALL power at THAT point they could go about 9 miles.
As far as landing next to the ferries? The pilot could have adjusted his touchdown point to land at a slightly closer point, but trying to 'stretch' your glide is pointless if you're already at your best glide speed. Best glide speed would probably around 210-220 kts - estimate based on 5 type ratings on different a/c- not A320 qual'd, but jets are jets to a large degree.