From what I understand the transition to "Caption Supervisor" last year was to make it a bit more hands off position for Crotts anyway. The horn line was really run by Mark Nichols (the Caption Manager) day to day. According to people close to the corps Crotts was around a little in the beginning of the season and a few days at the end, but not really running much of anything.
Fortunately for SCV it seems like Mark and the core team of brass staffers are still on board for 2020 along with some new additions.
The other strange thing about all of this is how active TrumetCam (aka Chip Crotts) has been on this thread talking about himself in third person and how SCV music will be taking a step back without him being there....