Warren Feeney came on as an early substitute in his playing debut for the Blues.
David Scullion put the Glens two goals in front early in the second half.
But Linfield began clawing back thanks to a goal from Aaron Burns.
An equaliser came from Peter Thompson before a third late stoppage-time winner from Burns.
COMMENT RULES: Comments that are judged to be defamatory, abusive or in bad taste are not acceptable and contributors who consistently fall below certain criteria will be permanently blacklisted. The moderator will not enter into debate with individual contributors and the moderator’s decision is final. It is Belfast Telegraph policy to close comments on court cases, tribunals and active legal investigations. We may also close comments on articles which are being targeted for abuse. Problems with commenting? email@example.com