I had a couple scenes from the older games and I never learned if my suspicio was true

GEARS 2, Tai gets out of the wreckage at landown and meets up with dom and marcus for the second time. As they walk away, he looks back to the wreck and some eerie music plays. I was always suspicious of Tai after this, but he ended up just killing himself. Anyone know anything about this? Am I just being weird?
Gears 3, Baird grabs the nav computer off the barge and he does it after the rest of the group leaves. The same eerie music plays, as if Baird is doing something wrong. It ended up being nothing. Anyone know what this was?