It’s good you called out what th me Vikings D usually does and also what they were doing to adjust to the Bears. They basically were showing blitz every play and then dropping 2-4 deep giving away the middle. They were baiting Fields to think himself into turnover chances.
Most teams really struggle to run against the constant blitz packages. We are only 1 of 3 teams, and we did it twice, to run for 100+ yards against them. So those 6 man box packages are confusing for the line. Then we run motion to help JF1 identify the package. This moves receivers to different routes that take longer.
I still think the core issue with offensive production is JF1 decision making and pocket presence. Adjustments are then made to help him, but this takes the game plan into very predictable reads for the D.
It is very likely that Flus stays and Getsy goes. It QB turnover is the plan then it makes sense to go secure a new OC.