This just shows that Nicehash needs to update their withdrawal policies. I suppose at one time 0.01 BTC wasn't that much (~$10 when BTC was $1,000) but now with BTC setting new highs that 0.01 BTC is worth $60 and may soon be worth $100 with $10k BTC.

It's one thing to leave a couple of dollars stuck on an exchange or pool, but quite another to have them freeze close to $100. Best thing the OP could do is complain to them and also the authorities in their jurisdiction. One person might not make a change, but I suspect there are others in your situation or at least would like to see the minimums reduced since the value of BTC is soaring.

EDIT: I was thinking more about what I posted so I checked out the Nicehash website as it did seem hard to believe they had such a high withdrawal amount, and the first thing I seen was "Payments from 0.001 Bitcoin". So something doesn't add up with the OPs story.