Big Al, no, I'm not pondering on anything other than a barrel whose bore ain't centered in it. Doesn't matter where, nor how straight, it is; I think it'll still bend as it heats up. Just like a bimetallic thermometer whose needle is attached to a coiled flat strip of dissimilar metals; each metal expands a different amount for a temperature change so that spring moves the needle.
As far as bending barrels and bedding barreled actions is concerned, I don't think they have any effect on how a barrel with an off-center bore bends as it heats up. How much the stock touches it will effect how much it bends and gives it something to bounce off of as it whips and wiggles from firing.