Maybe Yoda is just that strong even in death. Maybe being dead for 30 years powered him up. Maybe the temple location gives him more energy. Maybe it’s just a thing that wanted to do for fun and Obi-wan takes things too seriously. Maybe the the question isn’t why can he do this out of nowhere, but why shouldn’t he? There are so many options in a magical space fantasy and
again the movie never explains why Yoda can and Obiwan can’t. It never explains that it takes 30 years for him to be able to do what he did.
again I say don’t you think it would have been nice if Yoda after he died in ROTJ made an appearance in the Emperor’s throne room and zapped Palpatine? Oh yeah it takes 30 years to be able to do that but the movie doesn’t explain that.
people are arguing over the supposed rules, again.
excuse me for wanting the Star Wars universe to make sense, and not liking plotholes/continuity errors.