Danny Briggs dragged Ventnor a big step towards Southern Electric premier division safety and pushed Burridge closer to the drop.
The Hampshire slow left-armer has found himself surplus to requirements in recent weeks at the Ageas Bowl with leg-spinner Mason Crane coming into the side.
That allowed Briggs to return to his former club where he hit 92 from 80 balls batting at number five to set up a 32-run win.
Although the Islanders have now climbed clear of trouble, they are still not safe.
But after the home side hit 262 for seven, Burridge came up short in their reply.
Henry Bartlett (five for 43) and Briggs (two for 26) restricted them to 230 for nine as Lee Savident (51) and James Richards (47 not out) impressed.
The battle to beat the drop continues to be a nail-biter with bottom club Sarisbury Athletic so close to a shock win at leaders South Wilts.
In the end, the champions got home by just one wicket and with one ball to spare after Sarisbury turned in a brave effort.
Ryan Covey (80) was Sarisbury’s key man in their 226 all out.
And South Wilts appeared to be cruising to their target until Phil Jewell (three for 30) and David Banks (three for 31) pegged them back.
Sarisbury looked set to claim a famous victory when the leaders were reduced to 208 for nine – still 19 runs short of the win.
But the title favourites held their nerve.
Had Sarisbury been able to see it out, Havant would have found themselves back in the title hunt after their 76-run success over Hampshire Academy.
Ben Walker (78) and Pete Hopson (43) fired a 102-run stand in their 268 for seven.
Harry Came (99) fell just one short of a century for the Academy while Cam Prentice (four for 31) starred with the ball.
Hambledon continued their scorching form with a regulation seven-wicket win over Langley Manor in division two.
Rhidian Chapman (four for 53) kept Langley Manor down to 177 before George Marshall (67) top-scored for the Dons.