“How anyone could have allowed Dan Cole to scrummage the way he did was absolutely beyond me,” Dwyer had said after England’s 39-28 win in Brisbane.
Marler, who ruled himself out of England’s tour to Australia following a troubled end to the season, responded to Dwyer on Twitter.
“Bob Dwyer is a w*****,” Marler wrote on his official Twitter account, @JoeMarler.
Marler himself was accused of scrummaging illegally by Dwyer during the build-up to last autumn’s crucial World Cup group game against the Wallabies.
England subsequently endured a torrid day at the set piece, but having dispatched Australia in the first Test last weekend they could clinch an historic series victory Down Under if they prevail in Melbourne on Saturday.
Marler was fined 20,000 and given a two-week ban for calling Wales prop Samson Lee “gypsy boy” during the RBS 6 Nations game between the two sides.
In my series, Bakkies Botha has so far set the gold standard for a grinder lock in one complete match: 1.1 involvements per minute in the brutally physical Rugby World Cup final of 2007, a quantum leap up from the best of 2020’s tighthead locks playing in the Tri Nations.