BARNSLEY stopper Sami Radlinger had to be cut out of his net with scissors after getting stuck after Hull scored.
With the Tykes leading 2-0 Keane Lewis-Porter pulled one back 10 minutes from time.
In the mad rush to retrieve the ball keeper Radlinger found himself in a tangle with his feet stuck in the net.
It was so bad the keeper had to be cut free with scissors.
The game resumed and Barnsley held on to record their first win since the opening day of the season with Conor Chaplin adding a third in stoppage time.
Barnsley’s Cauley Woodrow put a rising shot over early on in an otherwise quiet opening period.
The hosts took the lead midway through the half when Bahre laid the ball off to Mowatt who produced a measured shot to beat keeper George Long from the edge of the area.
Hull’s best chance of the half fell to Jarrod Bowen, whose low shot went a fraction wide of Sami Radlinger’s right-hand post.
Long was forced to make a good save down low to his left to keep out a Mowatt free-kick just before the break.
Hull boss Grant McCann decided to make a double substitution at the interval with Tom Eaves and Leo Lopes sent on for the start of the second half in place of Daniel Batty and George Honeyman.
The two-goal cushion came in the 75th minute when Mowatt slipped a great ball through to Bahre who slotted confidently past Long from inside the area.
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The visitors pulled a goal back when Kamil Grosicki’s cross from the left was headed back across the face of goal by Eaves at the far post and substitute Lewis-Potter was on hand to head in from close range.
Hull, who had won four out of their previous six league games, briefly threatened to force a late equaliser.
Josh Bowler had an effort deflected wide and Eaves headed over, but any hope of late drama was killed off deep into stoppage time when Chaplin scored a third goal for Barnsley with a thumping drive from the edge of the are.