Actually, unlike what Slurpee has mentioned, you can get the 3 items you've listed in your question by trading with others.
The Ghastly Ghibus can still be traded for
There are 4 ghibuses, one that is a robotic version
If you want the look of the ghostly ghibus solely, you can opt to get the Ghastlier and Ghastlierest Ghibus and change the style. If you're aiming for the actual Ghastly Ghibus, there is no way to get it.
- Ghostly Ghibus (has only 1 style, ghostly)
- Ghastlier Ghibus (has 2 styles, ghastlier and ghostly)
- Ghastlierest Ghibus (has 3 styles, ghastlierest, ghostly, and ghostly)
- Galvanized Ghibus (no styles)
Unique (yellow) quality Pyrovision Goggles can be traded for
but are more expensive than a Vintage (blue) quality Pyrovision Goggles
The Headless Horseless Horseman's Haunted Scrap Metal can also be traded for. Users can giftwrap it and send it to you, so you can trade for it. There also exists clean Haunted Scrap Metal that can be traded without gift wrap.
But no, in regards to your title, since all achievement items are server based, you cannot get achievement items back by re-enabling them through SAM.