Player Lock

Is it possible to play with only one player i.e. player of a particular position such as PG or SG while the computer runs the others. I really dont like the off ball function.

yes

pause the game the you will see select controller the doble crick the controller you will see player position you want
you dont need to do i again unless you want to change the player

You will need to use this however:
http://download.nba-live.com/index.php?act=view&id=1517

I already had it but i didnt know how it worked.

when you play, pause the game then Select Controller and click the Keyboard Controller(an keyboard image) and choose the player lock below.. Now you can choose what position you want to play..