At this point, pouring them back in the fermenter is definately NOT a good idea. I've done the pour back thing to a recent batch (see this thread) and I've been told it was a big mistake due to the likelihood of oxidation ruining the beer. My batch is still drinkable, in fact tastes quite good, but everyone on that thread are telling me it needs to be drunk fast before oxidation takes hold. But I poured mine back right away, yours is already carbonated, so pouring back would be even worse. If it really was 1.016 you are probably not at high risk of bottle bombs, just over-carbonation. But to be safe, I would make sure the bottles are in an enclosed box or covered container, a plastic container such as a cooler would be best.
Try chilling a bottle and then open it and see if it still foams out of the bottle when opened. One possible option to releive the overcarbination might be to de-cap the bottles, cover with cling film, let them de-gas a bit and re cap them. (That's assuming that you can de-cap them without having the beer gush out.) I have no experience doing this so hopefully someone else will chime in on whether this is a good idea or not.