There is an ongoing Lunar Orbiter Image Recovery Project that aims to generate better quality images from the magnetic tape recordings of the signal. But I haven’t found a recovered image that corresponds to the image in question.
Finally took a look at the link in the OP. What credulous crap.
No part of the artifact matches anything of how the whole rest of the photo looks. Contrast, grain, scan artifacts are all totally different in the “spike” versus the rest of the picture.
Idjits.
It looks to me like the black bit is actually a ditch or crevice. There’s a light stripe to the right of it and then a grey shadow to the right of that. The the spot between the light and grey it the top of a long ridge. The dark black to the left is a deeper bit shadowed by its left bank.
It’s not uncommon for the eye to mistake a dark line for a raised image but it’s far more likely to indicate an indentation. In this case, shadowed by the rise to the left of it.
It looks to me like the black bit is actually a ditch or crevice. There’s a light stripe to the right of it and then a grey shadow to the right of that. The spot between the light and grey is the top of a long ridge. The dark black to the left is a deeper bit shadowed by its left bank.
It’s not uncommon for the eye to mistake a dark line for a raised image but it’s far more likely to indicate an indentation. In this case, shadowed by the rise to the left of it.
The story says that this “antenna” would be about 3.6 miles tall (c. 19K’). Then, one sees that it is curved (not arrow straight). Seriously? Something that tall is not going to be stable with that much bow in it.
But it’s alien technology. 
Only a sixth the gravity, so that’s the equivalent of 3000’ on Earth or only 500’ on Zeta Gemini C …
Yes. The LRO has far, far better resolution. I’ll go off and have a look…
Here is the location on the LRO Quick Map. The exact location is just within the high-res area (4m per pixel at the linked zoom level) although conspiracy theorists will note that there’s a thin sliver that hasn’t been covered by the high-res imagery.
Wow, those NASA engineers are getting good with Photoshop these days …
Ah, I see now. It was Mary Whitehouse did that, pixelating the moon’s genitalia. Dirty, dirty moon.
We used to spend hours scouring negatives of prints of negatives of transparencies to find anomalies. I still remember the day we brought in an outside pro who announced “After careful examination, my determination is that it’s a … mustache hair.”
Everyone slowly swiveled to face me, the only guy with a 'stache.