They are similar species. But a GSP will kinda ooze like that if it doesn't have anything to encrust on or it's trying to reach more light. I just gave away a chunk or I'd show you what the edges looked like when the colony is on sand (which shows a similar growth pattern).
It does have a pink base. I found pictures of a corky finger gorgonian that looks similar. The polyps extended look so similar to eachother (GSP's and Gorgonian) I had no idea there was such similarity. Thanks!