I still think a resonable temp should be mantained even after initial fermentation is done. It's still slowly fermenting down to FG at this point. Have you measured an FG? I always give it time to settle out clear or slightly misty before racking to bottling bucket. During this same time,the yeast are cleaning up after themselves,then taking these by products of fermentation to the bottom with them.
Everything works if ya let it-Roady(meatloaf)