Army looking into whether Golsteyn will get his Special Forces tab and Silver Star back, despite...

There is a distinct possibility that neither award will be reinstated. The Silver Star, like other decorations, requires that the recipient's service be honorable during and after the heroic act. One could reasonably conclude that is not the case. While Trump can pardon, that doesn't mean that the Major wasn't wrong.
As for the SF tab, that can be revoked at any time by the SF proponency. I would say that it is quite likely he won't be getting this back.

He should not get either back. He is lucky he got an ill-advised pardon.

Here's my response to all of this... Lieutenant Colonel "Paddy" Mayne. Look him up, research what he, and others did; how he was recommended for-but ultimately denied the VC, and tell me this story isn't as least as old as the origins of modern special operations.