Weight restricted maybe. Maybe it was a IOE trip and he didn't want someone up there. I'll take a guess there was a legit reason, but if there wasn't, then yeah, he needs to be reported. Whatever the reason might be, you didn't get on. No reason to pout about it. Sorry you have to spend a little extra time in Mexico. It sucks but be grown up and move on. It's not the end of the world.