this bitcoin laundering thing is strangy:

if you follow the always biggest chunk, at the end 14 BTC lands again on the payment address
plus 40 BTC from somewhere else, makes 54 BTC
which he then send to the same address where he started the mixing but:
did not touch it afterwards, still there

this was 23.07 ~6:00 GMT. then 8:00 he told his wallet did not sync.
so IF, and only if everything is legit:
he could transferred the 300 BTC throug a mixing service to his Laptop's Wallet or so, for some reason i dont understand

i mean... i still hope he is somewhere on the way with a 300 BTC wallet to Germany