First off.. big Kudos to you for overcoming your addictions.
The beach symbolizes:
the meeting between your two states of mind. The sand is symbolic of the rational and mental processes while the water signifies the irrational, unsteady, and emotional aspects of yourself. It is a place of transition between the physical/material and the spiritual.
To me striping down to you boxers might represent "coming clean" or stripping away the addictions from your body. The "chase" men might represent the additions and the "fuzzy" man might be your higher self or ego.
I also find the chase dreams very disturbing.

