The "Past Masters" Love Me Do

Listen to two versions of Love Me Do:

http://www.youtube.com/watch?v=ed_2W_KO_zI

                      AND:

http://www.youtube.com/watch?v=KARfxYcF7W0

Notice that they are  both Paul but are significantly different.  In the first version, the chorus "Someone to love, Somebody new" is smooth with Paul's voice sounding appropriately young and in sync with the backing vocals.  Paul's voice in the chorus of the second version sounds old, his voice is shaky and the backing vocals (which include Paul himself) sound younger.  What is going on?

The first version is from the British Please Please Me album.  The second version is from The Beatles Past Masters Volume 1, released in 1988.  I've read discussions of Paul's "nervous" voice, and where the second version came from.  On Doug Sulpy's 910 board, one poster said that EMI realized or was informed in 1982 that another version of Love Me Do existed and a new master was made of it.

Love Me Do and P.S. I Love You were the only two songs that John and Paul could buy back ownership of because those two songs were published by EMI's own publishing house, Ardmore and Beechwood, while all their other songs were published by Northern Songs.

It's very likely that Paul recorded this song at a much later date--certainly later than 1962.  By the sound of his voice, he could not sing in tune or even articulate the words well.  If Paul had an accident that left him severely disabled, this mysterious version of Love Me Do could signal that he lived past the time he disappeared in mid-September, 1966 and that that version was a record of his disability.  That's what I think.