How do I fix this?

I’m sewing diligently on my charity blanket these days, hoping it will be completed before I turn gray.  So I finished sewing together another 2 rows and was straightening it out, looking at the seam, when I see this:

That, my friends is a granny square that has started unraveling.  Turns out the unknown crocheter didn’t tie it down as well as it could have been, and it’s started coming undone.  Problem is, it’s sewn into the blanket already, that’s the seam above it.  Oy vey.

That was not a fun fix.  Or as my coworker might say, a Phun Phix.  She likes to have Phun with Words.

In related news, I think that most things on earth are easier than trekking through afghan projects.  They never seem to end!