Doesnt have to major spoilers to "spoil" some of the unknown/excitement in even small ways, I KNOW Jamie will be back in the fold eventually (major key character), so its no major spoiler, but I dont need to have it confirmed for me by someone who knows the plot for sure, that it will happen in next episode or such. Not major spoiler, but chips away at the interesting unknown factor to get it confirmed.
For example I pretty much knew by basic deduction what that dark ghost creature would do eventually as soon as it came out of that red bitch's vajayjay, but it would still lost the sudden effect it had if someone had confirmed it would happen when it did last episode.