You have run a full reset either by saying "/1.forcereset" or clicking the "force reset" button after first running a "smart reset" (force reset is only available for HUD v5.xx.xx and above).

If your HUD is still not working right (and you're absolutely sure that it's the HUD that's borked, not your cuffs/gag or other gear), then sadly it means that SL has borked your HUD really badly (some corruption of the script at the SL server end) and your only option is to start over with a fresh set.

To get a fresh set, you just need to update your Signature toy.