Having known someone like this I think he'd have assumed that Bill liked him too much to publicly call him out, and if he did, there were no witnesses so they could wriggle out of it with a "misunderstanding".
I'm sure that's true, but I do also wonder what caused TW to say something so melodramatic and short-term to BC, as it seems like such an unnecessary lie (which was going to be very quickly proved untrue) if it wasn't to get him out of a difficult situation.
Which does then make one wonder what the difficult situation with BC was.
There's certainly a long pattern of them moving swiftly on after 'issues' with people in their last setting. And that whole bit in TWS where, a few months after they've moved onto the farm, 'Sam' (BC) shows up to see them on his motorbike and literally cries with joy at the miraculous work they've done in almost no time, has always read very oddly to me.
Had they lied to BC about their farming experience, having agreed to actually farm the land, rather than just run the cider side of things and do a bit of cleaning up?
There's that very odd, and presumably entirely fictional, earlier scene in TWS where 'Moth' says:
‘Do you remember how much equipment and livestock it took to farm a place this size?’ Moth was now lying on his back on the damp grass, watching clouds mass and then separate, but obviously his thoughts were far away.
‘Not really, I think I’ve blocked it out. When we were walking I tried not to remember because thinking about home hurt too much, and now if I try to remember I can’t.’
‘I can, I remember it really well.’ I turned to him and watched his face, eyes closed, concentrating, as he listed an inventory of machinery and livestock numbers that I couldn’t recall if I tried.
‘The grass is growing now, it can’t be ignored, and we’re in no position to buy livestock.’
This must be pure bunkum. They had an acre and a half in Wales, and their 'livestock' at its height was a few sheep and some chickens. By the time they started the SWCP, the chickens had been long given away, and they were down to one elderly pet ewe.
SW grew up on a farm, but TW had not, had never farmed at all, and can't possibly have had the remotest idea about stocking and farm machinery for a commercial farm. SW is also pretending she once had this knowledge from their Welsh farm and has forgotten it, but that a man suffering from memory loss magically remembers livestock numbers etc from a fictional farm neither of them has ever worked.
The next bit sees Moth apparently deciding unilaterally, that they'll only work on the orchards and cider, and that BC will have to see 'about finding someone to use the grass. We can focus on resurrecting the orchards, making cider and overseeing a biodiversity plan for the farm, but I can’t see us being able to actually physically farm the whole place ourselves’ because they need the 'freedom to do other things, too'.
Which is all very well, if that's what they agreed with BC, but for all we know, BC hired them as farming tenants to run the full farm, so being told they weren't going to might have come as a shock to him.
I mean, this is all purely speculative, based on the obvious untruth about TW having considerable farming experience and knowledge from their own farm in Wales, but it might explain the breach with BC, and the lie about TW's imminent death?