Hi Van
Your flight" means that some in Christ's audience would experience the vengeance of God if they could not escape in time. Your organization acknowledges this.
We know in hindsight that was the case in 70CE for those that failed to use discernment when Gallus surrounded Jerusalem. There were other variables that could prevent people from escaping even if they wanted to. Some that were preventable some that depended on the individual relationship with God. A pregnant woman had plenty of time to flee 66CE because the siege came in 70. If that is a pattern for us today there is a symbolic application.
The context of the fleeing is not symbolic
Fleeing is not symbolic. However, the 2nd seige of Jerusalem occurred in the Spring. The first siege by Gallus also applied to everybody inside Jerusalem at the same time and season so how could winter and Sabbath apply to only one The focus here is: the individual, his flight and prayer to God.