I've only read the OP and not the whole thread but they are looking out for this now, legally you have to obtain the visa in person for it to be valid.
Yesterday myself and a friend went on a visa run, he has one of the above mentioned visas although obtained in a slightly different way, first border we stop at, eagle eyed Thai is going through every page of his passport asks him where he obtained his one year non-immigrant multi visa from, Hull he replies as stated on the visa, did you go in person asks Thai, yes replies farang, bullshit replies Thai, you left Thailand by a land border entered Malaysia stayed for 14 days then re-entered Thailand by the Malaysia border, now my mate is as good as fucked here so he thinks, as the Thai is saying he can no longer use his visa and will only be granted 30 days on re-entry (we were only planning on walking across the border get the Cambodian stamps and back again), no problem says my mate, you will give me 30 days then, i can still come back in no problem?? Yes says Thai as long as you have proof of onward travel, which obviously he didn't and nowhere to buy anything at this border, so Thai staples something written in Thai to my mates TM card and directs us to another border about 20kms away.
While sitting in the car, paper is translated to say 'cancel visa and only give 30 days on production of proof of onward travel', paper is only stapled to TM card so it gets removed no problem, arrive at next border (i'm purposely leaving the names of the borders out) my mate has the same problem trying to get out, yes yes he says i already know, i buy bus ticket and you give me 30 days when i come back, all sorted, so into Cambodia we go, get our stamps and he buys a bus ticket (200 baht) and back into Thailand, now here it gets really good, he hands over his passport and the guy is going through every page and even calls over his supervisor and they are now both going through it, 'oh fcuk' my mate is now thinking as this is going on for 10 minutes, then the supervisor says, you still have valid non-immigrant visa you can stay in my country for 90 days, oh ok then give me stamp for 90 days then, which he did and we then made a quick run for the car and out of there. You gotta love it when the left hand ain't gotta fooking clue what the right hand is doing.
They are now looking out for this, be warned.