Doesn't prove that CWJ was instructed to go to the "Sally's" and that was a condition of his returning to race riding.
As for your hair follicle BS there are limitations with that as well. It takes a week for the hair to grow enough to show a drug result i.e. if you have taken drugs within the last 7 days but not before that then it won't show. Sure the drug will be detectable for up to 90 days but you can't actually determine when it was taken.
Further they are not very accurate.
In 2015, researchers at the Friends Research Institute in Baltimore, Maryland, conducted a study examining the effectiveness of hair follicle drug tests.
The researchers compared self-reported drug use with hair follicle test results from 360 adults at risk for moderate drug use.
According to the results of the study, hair follicle drug testing correctly identified:
52.3 percent of people who reported recent marijuana use
65.2 percent of people who reported recent cocaine use
24.2 percent of people who reported recent amphetamine use
2.9 percent of people who reported recent opioid use
In a 2017 study, researchers compared the results of hair follicle drug tests with self-reported drug use from 3643 participants. Compared to the researcher’s expectations, the test results produced fewer potential false positives, but more potential false negatives.
Due to the study results, the researchers concluded that hair follicle tests do not provide reliable information regarding drug use in the general population.