Yea, that's the best attitude. Just make a note in your weight tracker and keep going.
If it helps keep you encouraged, you could go back and adjust your previous weigh-ins by equal intervals so you can get an idea of where you're going.
With as bad as your scale was, though, that might be pointless...
Regardless, now you can be confident that when the scale says you're losing, then you must be losing! This is GOOD! You can have faith in technology again!