Please excuse the flippancy of the headline. I hate to sound churlish with one more episode left in Smallville's decade-long existence, but yesterday's episode, "Prophecy," was just more stopgap plotting and wheel-spinning before next week's two-hour orgy of Smallville milestones.
Case in point: Jor-El, Clark's Kryptonian computer dad (who manifests reality-warping powers as the script calls for them), saps Clark of his Kryptonian abilities and gives them to Lois. Why? It's not entirely clear, but I'm guessing this was a heavy-handed lesson about marriage.
Jor-El, being the martinet digital poppa that he is, ostensibly does this to teach Clark that a human wife is a liability and to show Lois the full burden of Clark's superheroic powers. For every minute he tarries with her, he could be stopping crimes and disasters across the globe. Lois may be a vision in burgundy, but she's ultimately a fragile distraction.
At the end of the episode, Clark unplugs Jor-El out of annoyance (and macho independence). Lois, scarred from carrying Clark's blurry yoke and being possessed by one of Toyman's contraptions, calls off the wedding.
This wasn't the most execrable A-plot Smallville's put forth (it would be tolerable if presented earlier in Season 10), but we've seen this all before: the power-switching, the breaking up, Jor-El's overly dickish lesson, and Clark getting huffy with Jor-El.
I thought Jor-El's holographic powwow with his son in "Abandoned" was a suitable closer for this father-son silliness, but "Prophecy" dredged it up to give Lois a facile reason to split with Clark. Furthermore, we know Clark will kiss and make up with her (and his digital dad) by the final episode — after all, we catch a glimpse of Clark's famous romper suit on display in the Fortress of Solitude.