Did you change the Maf? It is connected to ignition parameters within the ecu and if putting out the wrong signal may cause a non start?
If you suspect Maf, you could try disconnecting the wiring plug and clean out the pins and retry, this does help as they can be corroded seen this before on other Audis, if you clean them at least it rules that out.
Looking at this from purely from a logical point, leaving out the different sensor names,i've not studied them as i haven't had the need yet, Love our FSI, but this points to some sort of Ignition or fuel fault. In a few of the cars i've owned over the years i've had this random hot start suddenly rear it's head but it quickly became inoperable which turned out to be a Hall sensor thats triggers of the rear of a cam on a Audi 2.6 V6 abc lump. I'd rule that out for now as yours is still starting.
Had this problem as well on an Audi - there must be an ignition amplifier output stage or similar that receives low output volts from the ecu in order to fire up the engine which converts to high output volts for each individual coil. The pcb tracks can distort and crack through heat soak causing erratic hot starting,If you follow my logic? If you can determine where that part is on the car that's where i would look, if only to eradicate that potential problem.Are your coils original, they could be breaking down now?
It could also be faulty wiring in the coil loom? Worth checking that out to ensure no breaks in the wiring and connectors are in good shape.Hth for now.