Yes, I agree, how in the FUCK did the blender cause the creatine to make you throw up? That makes no sense at all. However, here's something interesting a learned about Creatine a few years ago...
Don't mix Creatine with Champagne! I was making some Mimosa's (champagne & orange juice) for my wife and I with breakfast one Sunday morning and I thought "Hey, why not throw some creatine in there, since you'll be drinking all those high glycemic carbs?"
Well, I put the creatine in the Champagne and the entire pitcher started to fizz... Then foam... And overflow all over the counter. It was like some weird science experiment! After a minute or two, the fizz settled and what was left was UNCARBONATED CHAMPAGNE! Which is HORRID!
Good thing I had another bottle of Champagne!