The turn looks like a cap to me. If there is an 'x' probability one of them has JT and we know for a fact the other has 2-pair/set hero's equity is: [.167x + (1-x)]*100%

In order for a cap to be profitable this must be greater than 34%. Solving for 'x' tells us that one of the two must have JT 79% or more for capping to not be profitable.

Capping also makes the river easier to play.