"It wasn't really any one person's fault," said Frost.
"They were racing [the lapped riders] in their own battle and Andrew and I misjudged how much room there would be.
"Andrew managed to slow down enough but I was carrying more speed and couldn't, and clipped Andrew, causing to him to fall."
Frost's two race wins at Manfeild weren't enough to get the championship lead and he now sits a mere seven points behind Dennis Charlett as they head to the Wanganui circuit.
Frost likes the place and has gone well there in the past, but there might just be a fly in the ointment.
"It's pretty close at the top of the table and I really like the place.
I love the track but it is a scary place to ride and you are a bit scared so I ride a little within myself.
"The problem though, is the bloke who owns the bike won't let me ride it if it rains.
"He just sees it as too much of a risk riding it around that place in the wet.
"That was the deal we had going into the Tri-Series.
"I have no problem riding in the rain but that is his call completely," said Frost.
Series leader Charlett doesn't have any issue as far as racing over the weekend goes but he has his own hurdle to negotiate.
The former 600cc Supersport champion has successfully completed many laps of the infamous Cemetery Circuit but never on a superbike.
He also will be hoping for fair weather, but for different reasons. The extra horsepower may be a bit of a handful, as they say.
"I'm going to go there and do my best and if I win great, if not I'm not going to worry about it too much," said Charlett. "I'm looking forward to the challenge having never raced around there on a superbike before so that'll be interesting.
"It'll be good to see how I go up against the rest of the boys.
"I quite like the place having been around it a few times on the 600.
"It's just a street circuit - they're all the same with all their dangerous and quirky bits. The main thing is getting our sport out there in front of the public. I'm just going to go out there and do what I normally do and try and be consistent as I always do."
Jaden Hassan picked up two more wins in the F2 class to head to Wanganui with a comfortable lead. Glen Williams continues to prove to be the rider to beat in the F3 class winning both races to extend his championship lead.
The last two Supermoto races will no doubt be as action packed the preceding ones with Richard Dibben currently holding the bragging rights.
Eddie Kattenberg will be hoping to clinch the Post Classic Pre '89 class on Boxing Day as will Travis Moan in the BEARS category.
