That's got to be "power of suggestion." Is it too late for Tecnu? Probably....
I'm thinking I may have made some P.I. grow in my front yard under an oak by spraying the last of my Messenger on the yard. Every time I've used that stuff, something that I thought had died comes back. i'm not going to check just yet, but when i get up the courage to really look for it...it's the only place I can think of that I might have pulled a weed or two without gloves.
Take care of yourself..... I found Caladril that's "clear," instead of pink.