Veteran Barnet striker Paul Furlong scored twice as the Bees fought back to stun play-off hopefuls Chesterfield.
Wade Small pictured&nbsp;controversially fired the visitors in front after a good run by Demontagnac up the right wing referee Jarnail Singh gave the goal and then&nbsp;confusion reigned with&nbsp;assistant referee Neil Hair seemingly&nbsp;flagging for offside. Referee Singh though overruled his assistant to&nbsp;give the Spireites the lead.&nbsp;
Furlong now 41, equalised when he volleyed in Matt Lockwood's cross on 34 minutes.Jake Hyde then&nbsp;headed the Bees in front, before Furlong acrobatically volleyed Albert Jarrett's cross into the top corner on the stroke of half-time to leave the Spireites reeling. To add to the Spireites woes influential midfielder Mark Allott hobbled from the pitch with a hip injury to be replaced by Danny Boshall.
Half-time 3-1 Bees&nbsp;&nbsp;
Barry Conlon didn't appear for the second period and was replaced in ta 4-3-3 system by Scott Boden. But ity was the Bee's that should have extended their lead when&nbsp;Furlong was denied a hat-trick when keeper Tommy&nbsp;Lee tipped his 67th-minute penalty onto the crossbar, after Albert Adomah had been tripped in the box by Kevin Austin. Chesterfield pressed late on but Scott Boden headed wide from six yards and Derek Niven's volley was brilliantly saved by Cole at the death all of which left Spireites boss John Sheridan once again bemoaning his sides defending.
John said post game "After going 1-0 up, you'd think we would take the game to them, but we failed to do that. It was a terrible show. The players didn't believe they could get back into the game, its very disappointing. I keep telling people how they should defend and what they have to do. Again they've not listened and we have to defend a lot better"
BARNET (4-4-2): Cole; Devera, Breen, Gillet, Lockwood; Adomah (Upson 72), Hughes, M Hyde, Jarrett (James 88); Furlong, J Hyde (Livermore 77).
Subs not used: Carpenter, Kamdjo, Deen, Hart.
CHESTERFIELD (4-4-2) Lee, Whing, Breckin.Austin, PIcken. Demontagnac , Allott (Boshall 44) Niven, Rundle( Lester 75 ) Small Conlan (Boden 45)
Subs not used: Crossley, Page,&nbsp;Goodall, Hall,