Oh dear!!
I'm not going to sit here and wag a finger at you caron because you're probably beating yourself up enough over this without anyone else joining in.
OK - you lost the plot ..... you have two choices:
1. feel awful and turn to even more contraband in response to your 'failure' and totaly wipe out what you've achieved so far OR
2. Accept that 'what is done is done', put a great big full-stop behind the incident and carry on.
My advice is to go with the second option! Then just take the consequences on the chin (at least if you stay the same this week you know why!

). But whilst you resume where you left off with the diet, do a bit of head work and examine what it was that kept your hand going to your mouth.
What were your chatterboxes saying to you??
Were their 'comments' valid?? (doubtful)
Work hard at getting some contingency plan in place for if the situation ever arises again.
How about buying a couple of extra bars, chopping each them into 16 small chunks (cutting each quarter into 4) and freezing them in four-chunk 'portions' small freezer bags. Then if, after all your other distraction techniques fail (water, book, forum etc) and the need to nibble becomes overwhelming, you can fish a bag out of the freezer and satisfy the craving with minimum damage (frozen bars will take some chewing!!). I know the general consensus is NOT to ever, ever, ever give in to the munchie monster but sometimes the gnawing craving is just too much (and hey - even thin people get the munchies too!!) I personally think it's better to operate 'damage control' rather than have a full-blown slip up and if an extra 40 cals worth of frozen bar 'sweets' do the trick then it's worth it. (of course, the thing is not to eat all the bags in one session!!

)
Anyway - I hope you're feeling OK and are ready to put this behind you: you're human and it's not the end of the world.