I agree that his mechanics looked awesome earlier in season last year but some reason it just fizzled out as the season went on before his ankle sprain. It's like the samething happened in 2020 as well. I'm glad you mention Adam Dedeaux because I wasn't sure if Lamar Jackson was still getting coached by Joshua Harris or if he sort help from someone else. I'm sure Jackson knows himself that he needs to be more consistent as a passer throughout the entire season. I think James Urban has done a great job with Jackson and he's probably the next offensive coordinator in line if Roman moves on or is fired but have to wonder if maybe he's maxed out on coaching Jackson and The Ravens need someone new to help Jackson make it to the next level as a passer.
tbh i didnt see his mechanics break down that much later in the year - saw him hitch more sometimes because he was a bit less confident in what he was seeing which meant the pocket was breaking down more at times so the throws were more affected by the inability to step into some throws (which is why some of those shorter passes went low)
i think it was far more about losing confidence in the pocket
ive got no issue with his different arm angles although that would be the one thing id like to see him work on a bit (keep the arm a bit more vertical when he doesnt need to drop to the side-arm) - and it's interesting that dedeaux talked about not wanting to take away his ability to do that with his arm because it's so valuable so they worked a lot on the lower-half and his base, feet and hips
so for me this offseason is going to be about 3 things for lamar personally:
1) repping those mechanics more with the base
2) getting time with his receivers in the offseason that he hasnt been able to get as much of the last 2 years
3) re-establishing his confidence and getting him back to being decisive and hitching less (when he doesnt need to)
now part of that is related to other elements of the offence like improving the pass protection and also making sure we have schematic answers to various coverages etc. that we struggled with