If you left the phone temp rooted, it's very possible. I've temp rooted and removed bloat via freezing it and have not had this issue, but I usually reboot immediately after I'm done with what I need to do in temp root. Temp root is known to break Bluetooth, it's quite possible it's also affecting that app/widget as well.
It's also possible you may have removed too much bloat. If you've removed any of the HTC stuff, try putting it back.
Current: HTC Droid Incredible 2 and Motorola Droid 2 Global.
Former: Blackberry Bold 9700, iPhone 3G, HTC Fuze, Samsung Epix, Treo 750, Cingular 8525, Cingular 8125, Audiovox SMT5600, other non-important junk.