Yes there is all that---and Ennis is also guilty emotionally when it comes to his daughters, because he really wasn't there for alot of their time--supported yes, but until they were older, he really didn't do alot with them, take that factor--and then figure how fast he flew to Riverton when he felt Jr needed his help, and now think about his youngests newest education---that is where I get my feelings on Ennis' reaction to ANYTHING or ANYONE supposedly threatening his children.
Ennis has never worried about things happening to himself-and I don't think it is relevant when discussing the girls.--but something happened to Jack, and took Jack away, now he worries about Ellery a lot more than himself----AND His daughters are maybe even more of a concern to him because they are so young yet even if only in his mind.
He has come a long way, but in my opinion, he would never treat this as an improper mistake---he would look at it more like Lance was weanie wagging, and Francine was the victim--that is why I believe he would be VERY parentally protective. So I may be wrong, and it certainly may never even actually enter into this at all- we are just speculating anyway--but I have seen parents go ballistic defending their children before, not pretty, but that mentality certainly still exists. And Ennis is old world deep down.