Just wanted to give some relieving news - I had overstayed my DTV by about 3+ days. Paid the fine, no problem @ BKK airport. Had a few laughs and then asked the agent about potential revocation. No revocation until after 90+ days of overstay.
I read in previous comments that you'd be banned, kicked out, revoked, etc. That is, for me and those at BKK airport immigration, not true.
Keep the overstay minimal, and you shouldn't have a problem!