In a hard hitting interview earlier this week Horan insisted that factually incorrect commentary by RTÉ ahead of the final against Donegal influenced officials.
But yesterday Horan hit out at Brolly specifically over an RTÉ Radio One interview on the week of the decider, alleging that the former Derry star accused Mayo of cynical fouling and never referenced any other side in the debate.
Speaking after his side lost a Connacht FBD League tie against Leitrim in Ballinamore (0-9 to 0-8), Horan had harsh words for Brolly.
“Joe Brolly was very selective in his commentary on Mayo and in my opinion it was biased and I think he should have been checked by RTÉ.I think his comments were targeted against Mayo.”
“If you take any of the quarter-final games last year, I’d challenge Joe to go back and look at some of those and look at what the foul count was.
“So what was his motivation for just selecting Mayo?
“It’s nothing to do with Donegal and the All-Ireland victory. They were fantastic and absolutely deserved their victory. I’d just like to know what his motivation was for selecting one team and one team only when there were other games with a lot more foul count.”
Asked if it had concerned him when he first heard of the interview, he said: “The timing of it... I know we’re on about strategic this, that and the other but who’s to say the timing of those articles weren’t strategic.
“But look we’re here today in Leitrim and they deserved their victory and taught us a few lessons. So we’ll take them and move on.”
Mayo fielded three of the team which featured in September’s decider yesterday as Leitrim built up a 0-5 to 0-0 lead by the 16th minute with three frees converted by Emlyn Mulligan while Adrian Croal and Ray Cox shot a point each. But Mayo were level by the break with points from Darren Coen, Alan Freeman, Michael Conroy, Lee Keegan and Barry Moran.
It was still level by the 56th minute until an Emlyn Mulligan free secured a win.
Scorers for Leitrim: E Mulligan 0-5 (3fs), A Croal 0-2, R Cox, P McGowan 0-1 each.
Scorers for Mayo: D Coen, A Freeman 0-2 each, M Conroy, L Keegan, B Moran, E Varley (f) 0-1 each.
LEITRIM: C McCrann; A Wynne, C Egan, P Maguire, D Beck, P Brennan, C Clarke; W McKeon, P McGowan; G Hickey, E Mulligan, K Conlan, R Cox, B McDonald, A Croal. Subs: S McWeeney for Egan (27); J Glancy for Conlan (HT); C Beirne for Cox (43); R Lowe for McDonald (53)
MAYO: K O’Malley; M Walsh, S McHale, L Keegan; T Cunniffe, K Rogers, R Feeney; J Gibbons, S O’Shea; C O’Shea, E Varley, C Carolan; D Coen, A Freeman, M Conroy. Subs: B Moran for Gibbons (4); C Boyle for C O’Shea (43); G Cafferkey for McHale (50)
Referee: S O’Hehir (Galway)