I you must try to live this way then I imagine there's less at stake (detention cells, forced to buy plane tickets etc) if you try a land crossing? Or..?
I did the visa exempt just now. That takes me to two for 2018 so I guess on Jan 1st the clock resets? PS I had to get back to Thailand urgently and didn't want to wait till Tuesday for an embassy visa.
I did mine in Vientiane, it went quite smoothly and the weight of opinion seems to be that it's the best option for new teacher hires. Make sure you have all the necessary docs including a passport sized photo and a photocopy of your employer's ID card.
And there is a 1 USD surcharge for evenings and weekends. Not a scam as some foreigners have grumbled about. It is signposted at the visa registration window.
I guess I could try to ask for leniency. I have text messages on my phone from my university bosses saying there is no requirement to register in Nakhon Sawan, and as a new employee in Thailand I trusted their guidance. Not saying it would be accepted as an excuse, but worth a try.