This
http://www.wpa-pool.com/web/the_rules_of_play#6.3
together with this:
http://www.wpa-pool.com/web/index.asp?id=123&pagetype=rules#8.4.
As people have commented, no foul. Not in 14.1 , neither in any other WPA regulated pool game.
Edit. The former link of the above above doesn't work correctly, don't know why, sorry. It should refer to Fouls 6.3. The latter seems to work.
Thanks I always thought that the frozen ball was needed to be driven to a different rail