The Cat
Will drink milk from your hands
It's a mental thing imo. Never had it in darts but I did have the snooker version of it - just couldn't push the cue through. I got over it in the end by hitting every shot as hard as I could.Total mental issue, it's basically a mind block, you go to release but feel that you aren't going to hit where you are aiming for and so you can't release the dart. That's why Aspinall re-grips often. His is more a grip issue, he manages to release the dart once the grip feels right. Some players literally seize up in their release and can't let go of the dart.
Didn't make any sense to me as I was always rubbish at snooker so it wasn't a pressure thing. It didn't come back though.