Hamstring soreness after shoulder dislocates??

I was putting down the weighted bar and realized my hamstrings were insanely sore suddenly.  Like borderline cramping.  And it's now been 24 hours and it feels like I did a hardcore hamstring workout yesterday.  So sore.  Feels good though.  It just didn't make sense that it came after shoulder dislocates.  Any ideas?  Should I be concerned?  

Hi Sean, 

Did you do any other workout today that involved legs?

 All I did was the prone holding the bar off the ground, shoulder dislocates, and thoracic bridge stretch.  And I skip the later elevated bridge holds because I'm not there just yet.  And here I am 2 days later, and from the backs of my knees all the way to my glutes feels like they're recovering from the workout of a lifetime.  I think that's hamstring?

I'm used to thoracic bridge series too.  It's never affected my legs like that.  

Ah, prone. You were using your hamstrings to keep your pelvis in a certain position. Probably similar for the thoracic bridge stretch, though I'm unsure which one you mean. Over time you'll adapt, but try 1/3 of the number of reps today and tomorrow and see if that reduces the tension. I read somewhere - and have anecdotal evidence from my own training - that when you have DOMS (post-exercise soreness), a small amount of concentric exercise (the "lifting up" part, as opposed to "lowering down", which is eccentric) can reduce DOMS a little.

you are awesome.  Thank you.  That makes a lot of sense