In the beginning, when Barry and Fitzhugh are "frozen", Barry's legs change position.
The issue of what year they are from is confused because two different chronologies are given. At the very beginning, it states that the time travelers are from the year 5477, presumably meaning A.D. But when Olds is drugged, he tells Steve that he comes from the year "5032 of the Atomic Age", which presumably begins when the A-Bomb is dropped. If they had come back 5,000 years, then it should be 32 years after 1945, or 1977, which is close to the right time but is still before the Spindrift made its fateful mistake. That would also make the original statement that they were from 5477 completely wrong, since 5,000 years after 1945 would make it the year 6977, not 5477.
When the time travelers go back they said they went back in time 5,000 years. However, since they came from the year 5477 they should have landed in the year 477 and not 1985, which was the year the show was set in.