Looking at Meltzer's Rose bio, it seems June 8, 1979 at the Cow Palace was the date of the incident. For context, Rose had been wrestling in SF since around mid-1978. The last episode of "Big Time Wrestling" taped in Sacramento aired March 19, 1979. Thereafter, "Big Time Wrestling" from Portland (yes, the show had the same name) aired in the time slot and Shire used Portland talent for his Cow Palace shows. Attendance for these shows wasn't very good though, and Shire began having problems with Owen and the Portland guys. Portland guys were no-showing dates during this time as well. On top of all this apparently the Amarillo territory of all places (now owned by Blackjack Mulligan and Dick Murdoch) had TV in San Fran and were running shows in towns Shire had abandoned. Anyway, things were very tense at the time and Rose wasn't being paid what he felt he was owed, which led to the shoot promo. It looks as though the incident was the last straw for Shire and Owen, and Portland Wrestling was replaced by "All Star Wrestling" from KC. This was a total disaster, and crowds at the Cow Palace plunged to less than 500 at times. Shire finally pulled the plug after the January 1981 Battle Royal show (which actually drew 6,000, as the Battle Royal card was annually the biggest show of the year in SF).