Episode 54- Cut Ties?

I have a hypothetical question for anyone who cares to answer...

Let's say you have been friends with someone for about a year. You talk just about everyday--even if it's just a quick hello. Everything has been cool up to this point, no arguments no drama...

Then all of sudden friend doesn't speak to you for a week.

Now the first few days, you're not overly concerned. People get busy. It happens

By day 3 or 4, you're mildly worried that maybe something is wrong. You try reaching out to them and don't get a reply. At the same time, you see they're posting to their blogs and social networks like crazy (meaning: they had enough time to do all of that, but not enough to at least say "hey I'm breathing"....ok?)

On day 5 you notice that the blog and status messgaes have gotten rather cryptic... several of them make mention of "cutting certain people off" or "getting rid of dead weight"

Then all of a sudden after a full week no contact...the friend contacts you, as if nothing happened.

Now there are a couple of scenarios here: a) it's possible the friend just got super busy and the other stuff had nothing to do with you whatsoever b) it's possible you did/said something that you just don't realize

During the conversation you ask without being overly obvious what they've been up to...and the friend sidesteps the answer or is very vague.

How would you handle this? would you:

a) leave it alone and hope maybe they come around and tell you what's been up
b) flat out ask them (but keep in mind you might not like the answer)
c) say the hell with them and just sideline the friendship because you don't have time for the bs

or perhaps some combination thereof...