That is in fact true, but not May's intention here - she looks to be resigned to 'no deal' now and the passing of the Brady amendment this evening will simply help her manage it (in terms of her own reputational damage).
Other options, like a general election/2nd referendum/revoking A50 might start to look more palatable to some, though (obviously none carry anything like a majority at this stage), given that the only alternative will be no deal.
That can't be done unilaterally, though, and the EU would only agree to it if there was a GE/2nd vote on the table (or to allow time to pass the legislation for a ratified WA).