I just returned from overseas and went to Jomtien last week (Thursday) and lodged TM30, normally with same address.
Not only was it accepted but I saw 3 people in front of me get fined for failing to lodge TM30 after going to Bangkok and not filing new TM30 when they returned to Jomtien - they didn't even go oveseas!!
One correction: Thai Consulate in Hobart, Tasmania (Australia) does NOT have any financial requirements for METV - you will even notice their specific application form doesn't even mention any financial requirements. BUT its a long way out of normal travel haha 😉
You might still be in a spot of bother...any extension from 27 Oct will only take you to 26 Nov, 30 days, it's not a one calendar month extension...so it won't cover you up until your flight.