how about instead of what people can get away with, they learn the rules and their responsibilities when visiting and staying in a foreign land and dutifully carry them out.
Be aware if using the Vientiane embassy they have very strict requirements to obtain even a tourist visa. You also need to book an appointment online. Visit their website, prepare everything as required and you'll get your visa.
You need to let your OA extension lapse by not getting a reentry permit before you leave. Then either return on O visa or tourist visa and apply for O in Thailand, then extension if you meet requirements.