> A SW pilot that was supposed to be working that day.
A single pilot claiming to have gone to work would be sufficient to disprove the sick-out? 1,000 out of about 3,000 flights got canceled on Sunday. I presume the remaining 2,000 were piloted; I don't know that an interview is necessary to demonstrate that.
A single pilot claiming to have done a sick-out doesn't prove anything much, either. I can find a doctor that claims demon sperm causes gynecological issues (https://cbsaustin.com/news/local/report-texas-doctor-who-wen...), but that doesn't really lend it credence.
The sick leave data seems a lot more compelling than digging up one interview, in either direction.
Perhaps via their official representatives, the Southwest Airlines Pilots Association?
How many pilots would you need to see interviewed to determine there wasn't a sick-out? After all, something like 70% of flights went ahead.