The generation that Jesus was referencing was not the generation that included the disciples, otherwise, the second coming would have happened already. He was referencing the generation that would be alive when all these events take place ... sometime in the future.
That does not fit the context. You are really reaching to come to that conclusion.
How about verse 36, which says "But of that day and hour knoweth no [man], no, not the angels of heaven, but my Father only." This is in reference to the second coming of Christ. Christ Himself says that no one will know the day and the hour. However, in the earlier part of the chapter, there are a lot of signs that Jesus talks about. How can these be in reference to the same event?