i have my trackir profile set to exclusive as well, otherwise it will just switch to the default profile automatically as soon as i start cliffs of dover(dont know the reason for that)
what i have done to avoid this center detent, is adjusting my profile according to it.
the default trackir profiles,all have their curves ending in the center of the axis 0/0, or at least tend to increase the closer to the center they get.
if you just have the pitch axis for example as a horizontal line, it will not stuck anymore in center view.or at least it will be not that apparent anymore and certainly not to an extent where it gets annoying.
__________________
|