Hang on - this is a thrust driven aircraft, not a wheel driven car! Slippery taxiway = reduced friction co-efficient = easier taxiing on one engine (assuming enough friction on surface to compensate for asymmetrical thrust through tiller steering angle).
"Unable to to taxi on 1 engine due to slippery taxi ways" does not compute.
Sigh. One can only wish, sometimes, that this forum could revert to being what it says on the label...
