I hate to pour cold water on any conspiracy theories but unless you are one of the top players, having a good round, followed by a bad round, is very much par for the course. 2 weeks ago I shot 3 29s in four 9 holes, the next day I could barely break 34. Sometimes you're on the right side of the hole for putting, sometimes you're not.
I played the Oakmont 18 hole ready go the other week and played as well as I have ever done from tee to green. I walked off with a 72. The next time I played the same 18 hole ready go I hit 6 greens and shot a 64. Sometimes there really is no reason for it other than bad luck, poor putting and misfortune.....