I have simialir issues with a few programs when I disconnect the TV after using DualView on a nVidia based card.
Three other solutions to consider for next time it goes wrong...
1) Simpler, but won't always work... When the window is not minimized, right click on the program in the task bar, and select Move. DO NOT MOVE THE MOUSE AT THIS POINT ONWARDS. Now use the cursor keys on the keyboard, and move the window onto the desktop. Press enter, and you should have it repositioned. Re-size it to your preferred dimensions, close the progeam, and open it again to check it stays within usuable desktop space this time.
[edit] Forgot to say, you can now, obviously, use the mouse again :>
2) Check if the program has an .INI file in its program directory. If it does, open it in notepad (whilst the troubled program is NOT running) , and check if any X,Y style co-ordinates are listed. If you feel confident enough to restore the file to its previous state, if this goes wrong, then go ahead and put something like 0,0 or 20,20 as the starting co-ordinates. Save the file, and re-run the program.
3) If you use a nVidia based card, then right click the desktop, choose properties, select Settings tab, click Advanced, select the top right Tab, and check your nView options from the links on the little sub-window on the left. You can go through a wizard at this point. One of the config screens will refer to forcing programs to open within the confines of a certain monitor, and you can force the errant application to be displayed on your primary monitor here.
(depending on your current driver version, this may not hold true, similairly, you may already have a nVidia sys tray icon to speed access to the config screens needed in the first few steps of 3)
At work, so 3) is from memory, apologies if a little woolly.