That sounds more like est or Landmark/Forum or even Scientology... but nonetheless a LGAT (large-group awareness training -- basically a synonym for cult indoctrination).

Legitimate NLP training doesn't involve students getting yelled at, even offhandedly, let alone in any sort of systematic way. Anybody who claims to be teaching NLP in such a fashion needs to be reported to the organization that issued their certification, and then to the Society of NLP (so the organization's trainer-training certification can be revoked, if they don't revoke the trainer's cert).

(That link goes to a particular training organization, but I don't have any connection to them or offer any particular endorsement; it's just a page with good buyers' guidelines for ANY sort of training, let alone NLP. I'd also add that a legitimate NLP trainer will generally have enough work teaching paying customers, to have neither time nor reason to subject people to unsolicited "training".)