O’Loughlin turns 38 in November when he plans to hang up his boots and join the club’s backroom staff but he was impressive on his return from a five-month lay-off at the AJ Bell Stadium.
Lam said: “He was outstanding. He gives us a complete different attacking style and just having him there in the dressing room can only boost the players.
“He’s not playing on at the moment but you never know.”
Hooker Sam Powell celebrated his 200th appearance for his hometown team by scoring the first of the Warriors’ seven tries and dashing Australian full-back Bevan French added two more before half-time when they led 26-0.
Second-rower Liam Farrell also touched down twice and winger Joe Burgess scored a 90-metre solo effort as Wigan toyed with their tired opponents to set up a semi-final showdown with Leeds on October 3.
In the other semi-final, which will be played as a double-header at a venue to be decided, holders Warrington will play Salford.
Lam said: “It’s very exciting. Leeds are playing great rugby too so we’ll look forward to that challenge.
“In the last two weeks the players have been outstanding. I told them how important it was to take ownership of these big games and they certainly stood up today.”
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