I had one such situation in gold last fall when there was a bad price in gold (GLD) and it changed the whole look of the trade and I exited my position based on the data, only later to find out the data was incorrect and wished I had stayed in the trade. As for USO not being the same as crude, I merely meant to say that it is unlikely that many people were looking at the trendline (to comment on your "Assuming people were using this same trendline." in your chart). Here's hoping we can all help each other point out great trading setups.
Interesting that yesterday low has been revised if you reload the USO chart today. Thanks for your input on this Tim. This site really is more beneficial when people interact. Even a Thumps up vs. Down is good to see rather than just seeing that an Idea has been viewed multiple times.