You mean the same episode where we saw inside the time lock, where many of the Time Lords were fine and dandy, just incredibly annoyed, and who very nearly broke free from said time lock because they were instead stuck in a moment of a time rather than dead?They all burned to death. That's been explicitly established multiple times, most recently in "The End of Time, Part Two." The Time Lock is just a thing that kept the Time Lords from time traveling away before burning.
That episode?
Where, you know, they were clearly alive?
Even though they were supposed to be dead?
But weren't.
Because, you know, they weren't.
Since, you know, they very nearly escaped and even interacted with the Doctor and the Master.
That one?
Is that the episode you're referring to, using it to claim just how dead the Time Lords are?
Really?
I figured all the times The Doctor said they burned was just a very dramatic way of saying they were gone. Also, maybe it's just obvious to me but the time lock is more or less a time prison and we saw them escape once. For some reason, I can't imagine The Master hanging around inside the time lock nor Rassilon.