MELBOURNE midfielder Brent Moloney has stepped down from the club's leadership group, and relinquished the vice-captaincy, after admitting to being drunk during the early hours of Monday morning.

Moloney has also admitted he has a problem with binge drinking.

But the 27-year-old has vehemently denied that he urinated on the bar inside a St Kilda nightspot, as was alleged by a caller to a Melbourne radio station.

"I'm disappointed and embarrassed on what happened last night," Moloney told a press conference held at AAMI Park on Monday afternoon.

"Obviously I'm not setting the right standards for this footy club, and I'm very disappointed on losing the vice-captaincy.

"But I'm going to keep leading the way I have the past two or three years."

More to come.