According to interviews, it does indeed say "please turn me over". You must remember, this was the last song on side 3 of a double album. Jeff Lynne was concerned that people would not take the time to listen to that 4th side, and therefore inserted the phrase, using vocoder, "Please turn me over" Listen carefully, you'll hear it clearly.
Yes, but what interview does Jeff confirm this? I'm having trouble remembering where he mentions this.