Very unlikely to be related. I was on the train and 44932 performed brilliantly for most of the trip. I'm looking forward to hearing what actually went wrong but, judging by the way the engine was being examined at Salisbury I'd guess there was something fairly seriously wrong with the valve gear.
Anybody know for certain what was wrong?
I read somewhere (can't think where now) that an AWS fault was the reason for the tour being 'caped'. I have seen a video on youtube which shows WCRC 47500 returning the loco & stock to Southall depot in London. Both the diesel & steam loco appeared to be working. Hope no major problems have been identified.