I did a little more testing this evening.
Launching a mp4 file with VLC from the commandline:
Battery, turbo enabled: Immediate power off, within a second of hitting enter. Repeatable.
Battery, turbo disabled: Spike to about 90*, but did load and temps came back to high 50s in a second or two. I re-enabled turbo and could then launch any other videos without the spike.
Plugged in, turbo enabled: Spike to about 80*, back down to the high 50s in second or two, no power off.
Please let me know if there is any other information I can provide toward solving this issue.