The first fumble came on a broken play. It's not clear if it was Retzlaff's fault or another player botched the assignment.
The first interception was what we hoped we'd never see this year from Retzlaff. The whole offseason was supposed to be not take chances like that. I would have pulled him after that one
The last one seemed a bit fluky as the defensive lineman slipped and Retzlaff thought he had a clear lane.
If Bohanon is truly a rough equivalent to Retzlaff, the leash needs to be shorter especially on plays like the first interception. The QB who takes care of the ball should be the starter