Announcer Geoff Currier took Wells' spot on the 'OB drive-home show Friday afternoon.
Wells could not be reached Friday, and assistant program director Kevin Wallace deferred comment to his boss, Vic Grant, who did not call back. But Wells' photo has been excised from the website.
Wells, a veteran sportscaster and son of sports broadcasting legend Cactus Jack Wells, had been doing his afternoon program, Wells and Company, since 2006.
Before that he had been in Toronto with the TV specialty cable sports network TSN. He has enjoyed a 30-year national-level career, primarily as a football and hockey announcer.
"He was making a big salary, and CJOB's ratings just took a nose dive," a source said.
CJOB, which programs news, sports and talk, is the perennial ratings leader in the Winnipeg radio market.
But in the most recent BBM survey, released April 9, the station lost four points of market share, down to 15.3.
The big gain was made by Top 40 station Hot 103, which rose four points to take second spot with an 11.2 share.
In its best years, CJOB topped a 20 share. The station is owned by Toronto-based Corus Entertainment, which also owns Power 97 FM and Groove 99.1 FM in Winnipeg.