No, I can't confirm, only show what I was able to find about this mystery sponge:
As Candycane sponge, likely Axinella damicornis sponge with encrusting Parazoanthus axinellae:
Jacksock, who keeps it, posted the excellent photo of it in this
thread , later there was one more
thread about it. UK store posted photo of it with this name.
In search for more information on keeping, I found the Australian store website, that offers it as a Whiteline sponge. One of LFS here, in Canada, published lists of new arrivals online. Shipment was from Australia, name: Trikentrion flabelliforme - White Line Sponge too.
Here, at RC, it was named mostly as a Spider sponge, but without scientific name.
I checked Google image search for Acanthella and it again shows the same sponge in some cases.
Quite interesting.
If you find anything else about it or its keeping (how to, not why not

), post please for all of us. Post about my sponge is
here.
HTH