On the record sleeve, one section of the lyrics is rendered as:
Since you have left me
I'm all alone
I need your help, I
Can't stand on my own
Like I pointed out in November 2014, that the "I" jumps the line break here indicates the speaker/singer's worry or desperation. It's certainly intentional, but it gives the impression that he's stumbling over his words because of his emotional state.
More recently, I discovered that the word "feet" in the lines "Somebody help me / Stand on my feet" is sung to the tonic note, so there's a musical foundation along with the metaphorical one. I also discovered that while the original two versions (the alternate version recorded in 1964 and the single version recorded in 1965) are both in C minor, the version on Still Got That Hunger is in D minor.
Mixing the real-world history of the song (its being recorded three times) and the story in the song itself gives further emphasis to the "again" in "I want you back again." It's as if a situation that happened twice before is occurring yet again.