Evan Stubbart
EF1
I think it's premature to write off the trailing storm. This kind of interaction usually is bad for the lead cell. The trailing storm usually dominates. I wouldn't be surprised to see resumption of tornado warnings.
Not writing it off at all, but I think that the movement is going to kill them both off. I do see all your points though, and it appears the trailing cell is starting to form up a bit more again. The next 10-15 minutes will tell a lot.