Remember Trump said he and Pence had the same thinking? Why did Trump pick Pence to be his VP in 2016? Did he choose some random unknown guy that had a few ties to certain people?
Trump knows Pence better than any of us. Pence had a role to play. Remember what's coming, it couldn't have happened to the fullest extent if Pence didn't "betray" Trump.
Pence could be doing what's best for the country so the Military can come in.
Trump did say during his speech it would take more courage to not do the right thing. Multiple times. It didn’t seem to make a lot of sense at the time.