3.2.3 crash today

I am still kind of new but have been using apm on quads for a while. today I installed 3.2.3 firmware on my plane. I don’t remember what I had previously. I also left the usb plugged in for ease of programming between flights. I have never done that before. so I wasn’t sure if that cause the crash. I launched in manual as usual and after about 10 seconds the plane went to full power in a 45 degree climbing turn. after it got to about 200 feet it finally went into a dive. I have never seen or heard a plane hit that hard. I tried several different modes during all this with no response. sorry I also do not have logs and the board is trashed. did this thing crash from leaving the usb cable in? I have a lot of flights on this with no problems ever. thanks

Please provide tlogs and/or dataflash logs to help troubleshoot your issue.
Wiki link http://copter.ardupilot.com/wiki/common-downloading-and-analyzing-data-logs-in-mission-planner/

I can’t. I think the g’s got the board. It won’t connect now