What if the song is "sung by a horse" whose mistress has ridden off on some powerful new stallion (I know that stallions are not meant to be ridden, but it makes a good image...and innuendo) The "claw" could be spurs, while the "where you used to lie" could be the old horse's back or a place in the hay for the beloved mistress on long nights in the stable. "I could never go with you no matter how I wanted to" is the old horse's lament at having been sold to the glue factory...c'mon, use your imagination! It's a great song, isn't it?