serious? Do you think any one will say 'yes', I think it's a good idea to purposefully antagonize a horse so that I can punish him for it. I'd be shocked if they do.
On the other hand, if a horse has a problem area, and you know that it's NOT from pain, then it's reasonable to bring the horse into a situation where that problem might happen again, so that you can 'work' on lessening the problem.
Like . . . say your horse fears crossing water, well, you would bring him into an area with puddles, and with tact, work it so that he becomes able to touch the water, then put a foot in, then two, then cross . . .etc. But, this is not the same thing as provoking a violent respsonse , likely due to pain or a memory of pain, all of a sudden, then 'having it out ' with the hrose.