IC/OOC spill-overs are annoying. :-(
I've had the weirdest types of IC/OOC in the past.
One thing that regularly frustrates me is people using OOC reasons to back IC decisions, and then expect me to just accept the IC action with no consequences whatsoever because it was done for OOC reasons. And get OOCly upset when my character reacts ICly.
Another thing that has happened to me is the "announced OOC upset." Some RP interaction goes into some direction that might be un-fun for the player. So I check OOC "hey, your IC action there will likely make my character do X, which might not be fun for you; is that ok? We can talk about it OOC and see if we find a way out of the situation with a different result that works for both of us if you'd prefer." Answer: "No, that's ok, go ahead." Me: "You sure?" Answer: "Yes, just roleplay your character!" I then went ahead with X, and suddenly they were totally upset with me forcing this onto them.
The latter has happened a number of times now, so often that I've been wondering whether there's some kind of big RP culture clash in which some RP cultures frown upon OOC discussions of IC actions. If it wasn't about *players* being upset, it would be amusing.
I've had this happen a few times, myself. It sucks and it really decreases my desire to continue RPing with that particular person.
I tend to let IC actions just flow as they would in real life, with me having very, very limited control over what transpires. Raze's adoption of Sapphire has brought him into some really, really tight situations in RP and forced him to delve into aspects of his personality that he never explored before. It was fun and it was tight, sometimes it was frustrating, sometimes it was exhilarating, but it was always strictly IC.
I've had very tense IC arguments with other characters, and sent an EVE mail just afterward titled "OOC" just to chat with them a bit and thank them for the RP, encourage them to continue it and make sure the air is clear between us OOC. Even some of my RL friends have characters that are bitter enemies to my characters in other games that I RP in, it helps keep things vibrant.
As for the OOC? I've been getting an earful OOC from a few select individuals for a little over a month now and for a while it made me simply want to just quit playing the game, or at least quit playing Raze. Thanks to the OOC encouragement of some of my friends and those who have RPed with me before though, I manage to keep going.