First, this is BS. If you don't see the difference between back in the day with Ray and Larry Remmen and a positive test, and today's current cast of rule-benders and breakers, then you have a bigger problem than you think. Larry came up positive, the horses didn't go anywhere. Larry took a vacation, Ray went about his day as always, drove, and Don Queen went down as trainer instead of Larry. Personally, I see that as a legitimate scenario.
Second, I have long been a supporter of owner accountability, and there should be without question. However, you have a very slippery slope here. In the end, are you going to punish every owner and suspend all of his/her horses because one of them (and the trainer) came up positive? My answer is no. Should you suspend that one horse? OK, I can see that, but there has to be parameters. Quarantine (first) perhaps, additional testing, out-of-competition, additional blood, and so on-----all at the owner's expense. However, it still comes down to picking a trainer? Who is safe to pick and who is not? Alagna? Burke? Pelling? Takter? Toscano? Menary? McNair? Cullen? Svanstedt? Melander? Wallin? It's always a simple solution from one's keyboard.