Ha, yeah I've noticed the "desperate" thing too, I'll have a look at it tonight.
The "high arcing" call is the correct call though, it's a term NBA commentators use quite often.
(http://dictionary.reference.com/browse/arc)An "arch" is more of an architechural term, for bridges and the like. "Arcing" is when an electrode moves from one point to the other in a rainbow like manner, so its a more suitable term for the flight of a basketball.... i guess