Across1. Atoner, like a sumo, wrestling to come to a decision (4,1,10)
9. Paul is mad after a kid put it all together (5,2)
10. Narrow hips awkwardly holding a two-man tool (7)
11. Chimney climber chuckles to hear garden weeder's mantra (4)
12. Listen! Hire Wyatt to take over (5)
13. Bulletin righteously contains cross letters (4)
18. Enlist enhancers to upgrade party decorations (7,8)
21. Swarm a loud group (4)
22. Archaeologists find it difficult after a point (5)
23. Return a call from the choirmaster (4)
27. Fancy Lennon tune (7)
28. The Jeffersons, for example, make like Villeneuve (7)
29. Last night's party words are said and are songfully belted out (3,4,4,4)
Down
1. A lighter container has ads on the cover (5,6)
2. Ford model gets heck running around the ship (5)
3. They make loopholes in crooked laws (4)
4. Montreal players somehow rue the film producer's concern (8)
5. Advanced to drown a mongrel (6)
6. Leon is occupying our island (4)
7. Fake raisins in cereal taken out (9)
8. Call in on contemporary (3)
14. Hot drink of ice fisher spilt (5,6)
15&16. Tear a layer off when it's time again for 1 across (1,4,5)
17. Change the diaper, sir. It's in an awful state (9)
19. First of May sunrise in Asia is deliciously delightful (8)
20. It's done to needle throughout a discussion (6)
24. Cry no tears for a friend (5)
25. Place before tenant for officer (4)
26. Carol composed by monk in Germany (4)
27. Primarily into managing finances! (3)