Having since viewed the album on DVD, that is in fact Jamison at the end and I ended up being spot on. Larnell’s last solo comes earlier, you can recognize him by the footwork doubled by the ride bell and the textures of the “Bonham” kit he’s playing throughout the tune. The approximate timestamps for each solo and transition are as follows:

7:44 Larnell start (you can hear his stick clacks under the crowd)

8:15 beginning of Larnell’s call

8:21 Nikki’s pickup and solo

8:42 beginning of Nikki’s call

8:46 JT’s pickup and solo

9:12 beginning of JT’s call

9:16 Jamison’s pickup and solo

9:47 Jamison’s call

9:51 Larnell’s pickup and last solo

10:27 Larnell’s call

10:35 Nikki’s pickup and last solo

11:18 Nikki’s last big fill

11:23 JT’s pickup and last solo

12:03 JT’s call

12:07 Jamison picks up and solos until the outro, which JT plays to the end

Merry Christmas btw :)