A way to steal a fused abilities

[Sythrin]

Could you. Remove the identity of a fused via hemalurgy, than extract the soul/spren with a raysium dagger and insert it into another Singer?

As identity is away, would the Singers identity take over and grant them the surge of that singer without dying?

[Nitpicking]

Hemalurgy could probably spike the Cognitive Shadow that is a Fused out of a body directly. Hemalurgy is very flexible.

That said: we know very little about how Identity works. Can you spike out Identity completely and leave a fully sapient person a "generic mind" with no attributes?