Over the years, some people have tried to claim that detpack throwing was a glitch in the game. Most of us didn't care and continued to do it anyway, but the topic was still debated somewhat.
Today, I was bored, so I decided to try to replay the swbf2 campaign without dying at all. On the jedi temple level, I was running around as an engineer. I tossed a detpack and after killing a jedi, a clone voice behind me said "Good throw!"
I apologize if somebody has already pointed this out, but I had never heard it before and it seems to me like that's an indication that detpack throwing is, in fact, an intentional feature of the game.