Basically the assumption was that sticky bomb was a bug and that it was a low-priority fix. I was asking if it's considered an exploit when players go out of their way to abuse it. The blast network guide describes it as a bug and it seems to be like a bug (for reference: http://wiki.spiralknights.com/Blast_Network_Guide) but it might actually be intended. My suggestion is to remove it for purposes of balancing.
My exchange with support:
Me: Is persistently and intentionally using the "sticky bomb" considered an exploit in the game? I do see some players do it as many times as they can and it's very hard to escape.
Support: Hi! Choosing to exclusively or mainly use only one of the available weapons is not considered an exploit, no.
Me: The sticky bomb isn't a kind of weapon but a technique where standing on your bomb causes the other player to get stuck and be unable to move in blast network. This seems like a bug or exploit because a person who dies on top of their bomb can make other players get stuck on it if they were standing there. It can happen accidentally but I see some players that go out of their way to make players "stuck" in blast network with this technique. Are you sure this isn't a bug exploit?
Support: I don't believe this is a bug, but feel free to submit a bug report using F2 or /bug, and our developers will review. However, I can see that this might be a balance issue. The best way to address this is to start a thread (or add to an existing thread on the topic) in the Suggestions forum: http://forums.spiralknights.com/en/forum/7 This is where we review player feedback on how the game should be tweaked/improved to make things more fun. We appreciate your feedback!
Players should be solid not one on top of another. This will give a different feel to some situations.