Wales assistant coach Rob Howley has launched a scathing attack on New Zealand hooker Andrew Hore following his challenge on Bradley Davies in the All Blacks' 33-10 win in Cardiff last Saturday.
Davies was taken to hospital after being struck from behind in the second minute of the game by Hore.
He was subsequently cited by match commissioner Mike Rafter and will face a disciplinary hearing this week and Howley is hoping for a lengthy ban.
"What Hore did has got no place on a rugby field, as far as I am concerned," Howley said.
"It was an absolute disgrace. He has been cited, and I am sure it won't be taken too lightly.
"Situations and incidents like that have no place on the rugby field, and it had a huge impact on the game."
Wales prop Aaron Jarvis has been ruled out of Saturday's Test after suffering a knee ligament injury.
Jarvis sustained the problem against New Zealand on Saturday and will undergo further assessment on Monday before it is decided if the Welsh star needs surgery.
Wales head coach Warren Gatland, who has put back his team announcement until Thursday, hopes to receive better news over the fitness of lock Bradley Davies ahead of this weekend's Millennium Stadium clash.
The WRU also revealed that six other players on the injury list will benefit from the extra time afforded by a delayed team announcement.
Centre Jamie Roberts has a hip problem and won't train during the early part of this week, while flanker Ryan Jones had stitches in a head wound and will also only do limited training.
Wing George North remains in contention to return from a hip injury after missing the All Blacks game, while lock Ian Evans, who has a knee problem, was scheduled to undergo a fitness test on Monday and fly-half Dan Biggar is restricted to limited training following a shoulder problem.
Paul James and James Hook have returned to their clubs as the Australia showdown falls outside the International Rugby Board's Test window, but France-based trio Mike Phillips, Gethin Jenkins and Luke Charteris remain with Gatland's squad.