I don’t think they meant that sentence as a criticism if you’re reading it that way – if you take it with the second part of that sentence, I think they meant “out of all the places you could have run to, luckily you ran to the bathroom which provides some convenient excuses for tomorrow”.
I hope you’re feeling better soon anyway, it sucks having a moment like that and feeling so humiliated :( we’re all human though, and they will understand :)
Oedipus.