I think the pianist is just using rubato in the passage from 1:31 to 1:33, which is why he stresses the B. Tenuto only means to hold a note for its full rhythmic value, but it seems that the pianist actually does a slight ritenuto as well. 2:01 to 2:05 is a ritardando/ritenuto.
Care to educate me? I'd like to know how you were able to deduce that it was rubato
Ritenuto is a new term for me. I looked it up and it means "held back." It sounds like he held back from playing "E" after playing "B", is that how you were able to deduce that it was ritenuto?