it's not a fine of $4k, it's 4 fines totaling over $4k.
http://simcoereformer.ca/ArticleDisplay.aspx?e=2961737
"Larry Benz was also charged under the Off Road Vehicles Act for failing to wear a proper helmet. His fines totalled $1,650. West was fined a total of $2,000 while Janis Benz was fined $1,000."
not only were they transporting untagged deer, the driver was also riding without a helmet. breaking one law, might as well break another eh? they sure seem like real bright people. let's drag 2 untagged deer with an ATV without wearing a helmet on the shoulder of a very busy road

they were just asking to get busted and i'm glad they did.
what i'm wondering is why keith west was fined twice as much as his hunting partner...