OK. I realize that I have accidentally skipped over the "Legion" episode, which is probably why I am having a problem with continuity. However, if what Clark does with the Legion ring is time travel, then he should coexist with his younger self when he travels to the past. And, if it is not time travel but literally rewinding the rest of the universe around him - this has happened before in Smallville -, then it is even more absurd.
Smallville has had good dramatic situations with the main characters but it did not need Maxima and does not need "changing the past."