[Q] (Q) Uninstalling unused apps with TiBu topic

I've been using Titanium Backup for a long time. I'm a crack flasher. AOSP....TW....doesn't matter. Pros and Cons to all. Within the last couple of weeks I've noticed iam unable to uninstall the apps I normally junk when trying a fresh ROM. They appear to uninstall....repeat, same result.... only to find they are still present. I could just freeze them but I'd rather junk em.
Anyone have any input on this??