No - you're good... I grow in DWC and, when I need to withdraw some water to check the EC and pH, I'm always breaking roots - and I've even been advised by a really great grower to prune the roots which he says increases the productivity of the plant... haven't been able to bring myself to do that yet - but I'm researching it! (It would not be adviseable, I don't think, for a soil grow - but the kind of breaking you've described will do no harm at all)
Good luck!