I'd be willing to settle for something simpler, like having him captured with the rest of the party on Malachor.
There's no VO for it, but it could be done with a little creativity. Maybe he gets separated from the rest of the party and Sion and his assassins capture him in a little cutscene with the appropriate music but no VO; or maybe he is with the group when they confront Kreia and he simply has little or nothing to say. He is sort of the quiet type, after all.
The above would be far simpler to do and less awkward than having him die on Telos, since we have no clue how that's even supposed to happen, and that gaping plot hole would still be filled.
And SH, please don't use the word "snarky". You sound like Jae Onasi. [/barf]