I’m not sure if this has been confirmed or not, but I was under the impression that after shooting a round from a Sticky Detonator, you could not manually detonate it mid-air as you could with the Grenade Launcher. However, start watching around the 4:47 mark in this video.
Link: http://www.youtube.com/watch?v=P7AmAPJ0dR4&feature=player_detailpage#t=383s
It appears as though Elamite manually detonated his shot. If the SD does not allow this function, then the round would’ve continued to fly off of the map until it hit a kill barrier and exploded, but this footage indicates otherwise. The distance at which that round exploded appears to be way too close to indicate the presence of a kill barrier.
Does this appear to be the same to you all? If the SD allows manual detonation, then some of my personal grievances over the Grenade Launcher being removed will be somewhat soothed (albeit, never fully soothed).