We can't read the reports. As you did run for the exit, you did at one point pass all points of sale.
It is not the norm but yes, stops can be made while a suspect is still in the store. Yes, they are allowed to use force to get you to comply.
It is not unheard of. Not every officer is required to write a report and it is not unusual for a different officer to be the one writing the report, especially if they are junior to others.
You thought wrong. In some instances, all officers on scene at an incident may be asked to submit statements. Garden variety shoplifting calls are not one of those instances.

