ECM reset while running??? Not sure what is going on here.

Started having an issue where the ECM seems to reset or something. It occurs randomly and appears to last for 3-4 seconds, maybe less. I'll be driving along and everything is good, then all of a sudden, the ECM goes into open loop and the wideband O2 sensor shows somewhere about .70-.75 on the Lambda scale, then goes back into close loop and all is good.

At the points in the log attached: 07:25:272, and at 12:29:27you can see where the open loop seems to occur for no apparent reason. The strangest thing that sticks out is that the knock counts reset. That is what I find the strangest.

I'm not sure what to think at the moment unless there is something corrupt in the bin file on the eprom that I burned, or, the ECM has an intermittent heat issue.

Any thoughts would be appreciated.

This is a $4E ECM,1228062 TBI 6 cylinder.