Last night I saw that the dev-team had released ultrasn0w 0.9 18 hours earlier. So I upgraded via Cydia from ultrasn0w 0.8 while brushing my daughter’s teeth last night. Success! This seems to have fixed the problem I had with 0.8 where switching between cellular and wifi usage (by leaving a wifi area and entering an area with no wifi, required me to “kick” the antenna a bit. What I would do is quickly turn Airplane mode on then back off. This would get it working.
My initial test of this in 0.9 this morning was successful. Looks like ultrasn0w 0.9 fixed it. Awesome! Time to cancel my AT&T contract.