Catch a wave, you'll be sittin' on top of the world

"OK, stand down…report!"

"Captain Singh! The science section reports we encountered a rogue gravity wave from the Tau Ceti sector. Life support, hull integrity, shields and weapons are nominal. No damage to report. However, Archivist First Class Tshombe would like to speak to you."

"Tshombe, report!"

"Captain! The gravity wave hit right as the computer was creating the crossword for tomorrow’s ship newspaper. I’ve checked all the clues, and they are nominal, but something happened to the grid…"

"RED ALERT!"

---

As you can see Captain Singh takes the daily cryptic VERY seriously. You’ve been assigned to review tomorrow’s cryptic to make sure that it is still solvable…otherwise, it’s the mid shift for both of us.

ASCII version here

Across
8. Some wine and the latest of gothic metal for Penny (4)
9. Very specific about electrons & protons? (10)
10. Channel oscillation around extra bands (6)
11. Tended to be slanted (8)
12. Elton originally nicked radical ambisexual clothing from provincial (8)
14. That cast-away takes off at dawn (6)
16. Talk trash about women (4)
17. At last, BBC Four films second special at heart of the city (5)
18. Girl from the Deep South is behind (4)
19. Capri esthete makes offering to cleric (6)
21. A little bit after, closure about that girl is something to be found at the beach (8)
23. How long one lasts around it is questionable (8)
26. Lady Trojan a sainted one who imprisoned emperor (6)
27. Careening car hit me. It was kind of mean (10)
28. Escutcheon installation is a tedious kind of work (4)

Down
1. Conflict is over in Escherichia bacterium storage facility (4,6)
2. Barge in, grabbing fifty thousand with a frown (8)
3. Coloring stick made from cow-nose ray and onion-skin (6)
4. Stupid to cut lure swallowed by fish (4)
5. One comic is cracking about the means of production (8)
6. Sinuous wings carry lean birds (6)
7. A symptom of tiredness: becoming way up, then down low (4)
13. Even simple machine moves right to left (5)
15. To go faster, assign crew chiefs to pack box with eggshell wrapping over fragile pedestal (10)
17. Mother’s fluid dicing of manioc takes half of time (8)
18. Worries about hair after shaving head (8)
20. Take step to replace Indonesia with Afghanistan for attack from the air (6)
22. Halogen at condenser holds up gas component (6)
24. Indiana University has no limits to language (4)
25. Knockout star embracing teal wig (4)