Yes, the computer still turns off when a bump is hit. After connecting with my phone, I was able to reset all of the settings like language, wheel size, units of measure etc. They had all gone back to default. However, every screen that shows ride data is blank. But, if you press the stem button to start a ride, the 3-2-1 Go still works, the connected with the phone screen, and the transfer the ride screen work. Just none that show ride data.
Bumping the front wheel with the seatpost in or out does not shutdown the computer. However, pulling the seatpost out and giving the seatpost a light tap on the side will turn the computer off, even with slack n the cable. Messing with the cable will not turn the computer off.
It looks like the bad connection is in the battery itself.