To stay in the house for the final, I think Jay/Jason/Justin/ whateverhisname is, realises a change of tact, and newer softer approach is needed. Becasue of that some will see him as not all bad
I am pretty sure he was expecting to be evicted yesterday, and surviving he may put down to the change of tact so might carry it on, which I reckon will earn him extra support but probably too little too late however. Also by losing a lot of his house buddies, he would have had to change tact anyway.