drmike, thanks for the reply, I do something similar myself, but I guess what I ask is reasonable.
There are three possible positions one can take on this issue:
1.track-backs from within the weblog does make sense to be shown in the comments widget
2.track-backs from within the weblog doesn't make sense to be shown in the comments widget
3.track-backs from within the weblog doesn't make sense at all
I'm saying that I'm on position (2), and I think that most user would want it to be as (2).
If it is not possible now, maybe I should send feedback? Shouldn't be hard to implement, if as you say those links have special tags. would be just check for "nofollow" and if the source is from the blog itself.