At this time one week prior, Vancsik shared the 36-hole lead of the Madrid Open. He took a two-shot lead into the final round, but a quintuple-bogey 9 on the fifth hole left him with almost no chance to recover.
Vancsik hopes this week can be different. He will be looking for his second win of the year after taking the Madeira Islands Open earlier this season.
'It's been very difficult to forget hole number five last week,' said Vancsik. 'But I told myself that last week I played perfect all week apart from one hole and that I can do it again this week.'
Martin Erlandsson (68), Ross Fisher (64), Alvaro Quiros (66) and Steve Webster (66) are knotted in second place at minus-12.
Overnight leader Martin Kaymer, who matched the low round on the European Tour Thursday with a 61, only managed an even-par 72 on Friday. He shares sixth place with Charl Schwartzel, who shot a second-round 67, at 11-under-par 133.
Vancsik began on the back nine Friday and waited three holes to collect his first birdie, his second in two rounds at the par-5 12th. He parred the next three and tallied two birdies in his last three holes to go out in 3-under 33.
He stumbled to a bogey at the first, but reclaimed the lost stroke with a birdie at the par-5 third. Vancsik birdied the par-5 fifth for the second time this week and that birdie tied him for the lead.
Vancsik moved ahead with a birdie at the seventh. He padded his advantage with a 9-foot birdie putt at his last to take the 36-hole lead for the second week in a row.
Despite the collapse last week in Spain, Vancsik handled it and will try to use it to his advantage this week. He can pick up his second European Tour victory with a good weekend and that is what Vancsik is thinking.
'It was difficult,' said Vancsik. 'But I talked a lot with my sports psychologist before coming here and he told me to relax and just to try and forget about what happened and look forward rather than backwards.
'I can't do anything about last week, but I can do something about this week. I can win this week so I am now just trying to go out and forget what happened and play my game.
Lee Westwood (69), Peter Hanson (65) and Sam Walker (68) are tied for eighth place at 10-under 134. Last week's winner in Madrid, Mads Vibe-Hastrup, is still in fine form. He shot a 4-under 68 and is part of a group tied for 11th at minus-9.
The 36-hole cut fell at 3-under-par 141 and among the notable players who will miss the weekend are; Darren Clarke (143), Paul McGinley (143), Jean van de Velde (145) and David Howell (147).