As long as it's still active (SG is dropping) you don't have to worry too much about a little splashing, and you'll find that mead is far more resilient to both infections and oxidation than beers are, returning your sample's fine as long as you sanitized everything that comes into contact with your must... Welcome to the forum!
"The main ingredient needed is 'time' followed closely by 'patience'." - The Bishop 2013
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