That will be the camera drifting slowly right constantly during the recording. I tried to correct it and recentre the camera twice, but it drifted a lot right towards the end so the Barnacle was on the left of the screen. You can hear it in the phase change from R to L in the audio.
My recording from last night is already option 1.
Undamaged Barnacle and spikes, ship dismissed, no cargo, just the SRV.
I assume with the Canonn's love of spreadsheets that we already have one for barnacle sound recordings to help us keep track of the circumstances of each recording. If so, can someone point me to it?