Breathe mama...your baby is plenty old enough for a couple bites of solid food, and now is the time to introduce gluten-containing products. I'm not quite sure it makes a bit of difference anyhow... I have Celiac, and my youngest didn't get gluten until she was almost a year old simply because I don't cook with gluten. Turns out SHE also has a gluten intolerance. Waiting until a year to introduce gluten didn't make a difference. She also has multiple food allergies and FPIES, yet we didn't introduce allergens to her at all (besides a little dairy and some egg in french toast) until she was a year old--yet she's allergic to gluten, dairy, egg, nuts, and shellfish.
It sounds like they went above and beyond to give your child a very healthy organic meal when you weren't there to feed him. He's at the right age where introducing gluten can be a good thing. Please don't think I'm dissing you...I'm not...but I think in this case, you might just sit back, take a breath, and let it go. Check him for reactions, but the vast majority of children are NOT gluten intolerant (I think there is a disproportionate number of allergic kids on MDC, but truth be told, most of these allergies are likely not true allergies or Celiac. We happen to have confirmed IgE mediated food allergies and Celiac in the family, which increases our risk obviously. But the majority of children are fine with foods.) If you don't have a family history of Celiac, gluten intolerance, or food allergies, I think you can safely introduce solids since he's in the later part of the first year (if you wait too long, the risk of developing allergies can be greater...)