Looking at Hebrews 10, the opening part of the chapter describes Jesus as a sacrifice whose body has been offered up to pay for sin (see 10:10 and 10:12) 10:12-13 says that Jesus is now sat with God and waiting. It seems to me that the most natural reading is that Jesus was on Earth, was killed and will return (after all, Jesus must have a body for it to be a sacrifice !) And this theme is continued in the following verses. Doubtless Doherty offers an alternative explanation, but this does not seem to be a very strong point.
But, even better, Hebrews 9:28 says:
so Christ also, having been offered once to bear the sins of many, will appear a second time for salvation
That looks pretty conclusive to me.