Trampoline - watch out!

could this really be this simple?  Here I am gradually increasing my running, have not had any injuries since I began last fall.  (knock on wood).  So a couple of weekends ago I set up a new trampoline I bought for the kiddies (ebay - what a deal).  I was on it both days over this last weekend with them, then Sun afternoon I go for my run.  I had heel pain.  I immediately dreaded that it was the plantar fascitis I've read so much about.  So I read this at heelspurs.com:

Causes of heel pain include inadequate flexibility in the calf muscles, lack of arch support, being overweight, suddenly increasing activity, and spending too much time on the feet.

I'm thinking/hoping/praying that my pain is simply from using/overusing unused muscles to display my mad trampoline skillz to my kids.  Anyone else experience anything like this?  Or am I just wishful thinking (about the pain, not my skillz)?