Indeed, the circuit breaker had been found tripped by LOT engineers, but it was possible to press it into proper position during the first attempt and that is how the landing gear was retracted on ground.
Before jumping to conclusions about the circuit breaker not being reset in flight rememeber that -something- caused it to trip in the first place and
whatever that something was may well have been jarred loose during the landing.
JB6: BTW, this is meant for general consumption, not at all saying you implied anything - or that the landing was not amazingly smooth given the conditions.