You can do it more easier if you check the pev(id, pev_iuser1), pev(id, pev_iuser2) and possibly pev(id, pev_iuser3). (FakeMeta way)
Register DeathMsg event and do a print out on these above values, I'm pretty certain when your a specator iuser1 is the camera position and iuser2 is the target you want to view.