Possibly,

If you hadn't used any other hijack feature since forcing the power mode then you can do it fairly easily by touch.

Boot up.
Long press knob.
Short press knob,
Cycle mode (Right knob click cycles Normal->AC->DC->Normal ad infinitum).
Short press knob,
Press left and right buttons together. (should reboot)

If you have used another hijack feature since forcing the power mode, then this wont work. If you can remember what feature it was then we should be able to count through them too.