I don’t think it’s possible, as the input box doesn’t handle the length of the raw transaction. If you’re comfortable with the risk that the transactions might go through later, you can send new transactions. If you’re not comfortable with that (the risk being FLOT having to return the funds), you could send all coins to yourself to prevent them to ever go through if some node received a transaction and didn’t propagate it further until later (which seems extremely unlikely, especially as it should be likely you’ll spend at least one of all those inputs in a new transaction).