I wonder what happened to Brians guitar during the Guitar Solo on Live At The Bowl. It seems like a lead problem from what I can see on the DVD.
If I was Brian, I wouldn't have trusted the lead for the rest of the show!
It is cleverly taken out on the CD...
From memory, because this was the first use of a new stage set up, Brian managed to get himself a bit lost during the solo and wandered out beyond the range of his lead - as he took one step further, the lead came out of the amp - it got put back in so quickly simply because his guitar tech spotted what was about to happen and was on hand to tidy up.