Hi Gary,
Looks like you figured it out yourself, good work.
Aravind, simply put, either you're crazy, or you've never used Backup Exec.
Seriously, stopping services before you can eject a tape? Not normal at all. The discussion you cut and pasted, about the "hot swappable device wizard", refers to "add or replace any storage devices", but if you understood the post, he's not replacing the tape drive, just the tape.
Seriously.