I'm afraid you'll have to be patient with those of us that ask more and more questions to try to get the bigger picture!!!
I doubt its the farrier if he was the same with the other one
I agree with Foxhunter on the face rubbing - I know this was just you messing with him but if that had been a farrier trying to get a nail in a precise spot with all that swaying about you could have ended up with a lame horse so if you want to set a level for him then maybe find a place to tie him where he wont be tempted to scratch himself - or maybe try a fly mask on him when he's having anything done
I know how tough it is trying to deal with flies - and as someone who moved from the UK to the US I can vouch for the fact that the bugs here are way worse and way more of them. It never ceases to amaze me!!
I think you handled his feet pretty well - its a shame you couldn't hang on to that hind to start with but you didn't really have his full attention but I think you did the right thing by not putting it down when he stopped fighting he needed to do as he was asked, you insisted and he gave in. That is one time I wouldn't have rewarded by allowing him to put the foot down - saying 'good boy' was reward enough so I think you did the right thing there.
See, I didn't necessarily feel I gave in there. I didn't let go immediately, I held on until he stopped fighting, then I let go to check to see if I could find the fly because I thought he was trying to kick at that and I thought if I could get it away, he'd stop trying to pull to get it. But that is why I posted a video, so others could correct what I view as doing something right. If I don't have someone to tell me otherwise, I would keep making the assumption I am doing it correctly.