What happens to the minnow?
The last two batches of minnows I bought contained sticklebacks. I doubt the sticklebacks had undergone any VHS testing.
I had thought of this question years ago when the VHS fraud began. One part of the law is not to release any fish that did not originate from that particular waterbody. The only way to completely adhere to that is to not use live minnows for bait. The WDNR knows that. If it was only about VHS they would have completely banned the use of live minnows for bait.
Some in the bait industry were eager to find a pretense to have wild baitminnow harvest stopped. Mission accomplished.
Really n.pike you over think these thinks too much. The minnow can only be in one of two places... either it's still hooked and on/in the fish, or it got shook lose during the fight. I don't think there are real many cases where the minnow was consumed by a fish and then you hook it in the mouth. It's more likely that after a fish is hooked the minnow gets spit, but my vote goes to shook lose during the fight.