Anyone esle experience a chicken convoy?

[treblesum81]

So, after all my griping about not finding anything to shoot at, I finally run into a very nice convoy on the eastern approach to the San Bernardino Strait. It was about 12 ships plus a screen of another 8-10 DD's and subchasers, lead by a Maya Heavy Cruiser. I set up and targeted the cruiser since it was the highest tonnage / value target in the convoy and then managed to hit the magazine with a lucky torpedo. Bang... Boom... "She's going down!".. and then the entire fleet reverses course and runs away at high speed in the opposite direction...

I've been chasing them now for the last 6 hours (game time) and they don't seem to be slowing down... has anyone had this happen to them before? I've seen convoys go wild when you start shooting, but to literally turn and run away is new...