Huntington were missing several key players, including 35 goal marksman Chris Dyson and influential midfielder Neale Holmes, as Wigginton recorded a surprisingly easy victory against the second-placed side.
Grasshoppers would have been ahead after only five minutes but for a fantastic save from Tom Hewer, who pushed Dale Holding’s curling free-kick onto a post.
Instead, the first goal fell to Jamie Willstrop five minutes later as he took on two players before looping his shot into the far corner of the net.
Lee Stewart then raced through to smash a strike beyond Hewer and double the advantage before a linesman ruled out a Huntington free-kick that cannoned off the underside of the bar.
In the second half, Wiggy continued to press, and Michael Clancy stepped up to slot home a penalty after Matthew Tiplady was fouled in the area.
Their fourth was added by Stewart, minutes before Jack Sullivan struck an excellent low shot to get Rovers on the scoresheet.
However, Stewart then fired home past a helpless Hewer for his 16th goal in nine games.
Copmanthorpe led Terrington Glory by a Danny Leach goal at half-time, and that proved to be decisive with both sides scoring twice in the second half.
John Patrick and Ben Sheehan netted for Cop, with Johnny Brown and Rich Carrick offering Terrington’s contribution to a 3-2 scoreline.
Strikes from Josh Nelson and Nick Moss, plus an own goal, made up the Poppleton haul.
Poppy still need a win at Easingwold in their last game on Saturday if they are to have any chance of beating the drop.