stopping "wal"

Hi.

How can I stop the recover process of wal? Well, first I will explain
this:
When more or two or three processes are working, and I stop the
database, if I have any problem stopping the DB, I kill the backends (is
a tester machine).
When I start the process "postmaster", the wal make a "recover of
processes", returning to the last situation.
I would like to know how to "say" to postmaster don't make a "recover"
from the wal files.

Sorry for this explanation, but my english is very poor... :(
Thank you very much.

Have a nice day ;-)
TooManySecrets

--
Manuel Trujillo         manueltrujillo@dorna.es
Technical Engineer      http://www.motograndprix.com
Dorna Sports S.L.       +34 93 4702864