The lack of contact is alright, but it can’t go to extension.
First, let’s clarify that it’s not a handspring to extension. It’s a handspring to an inversion, and an inversion to an extension.
Now, a released inversion is allowed, but according to rule 3-3-6, it has to go to a stunt prep level or below.
(P) ART. 6 . . . In all other inversions:
- Inversions may release to the following provided there is a spotter:
- Dismounts with no more than a ½ turn.
- Loading position with no more than ½ turn.
- A stunt at prep level or below.
It can land in a prep and pump and go to extension, but it can’t go directly to an extension.