I can't speak for others but that seems the course of action you have undertaken is probably the best move considering the circumstances. The Whirlwind team have put a lot of effort as well as finances into their mixing project therefore I am also hopeful there is no malicious intent on their part. Hopefully the will post here or send you an email with an update.
I've put the campaign on hold for the time being, but I remain hopeful that this is due to something other than malicious intent. For now I would advise against depositing or even generating a new note on whirlwind. If you have a balance, save it down somewhere but don't withdraw the funds from it (since nothing is being processed you'd likely run a higher risk of it getting "lost"). Sucky situation and I do wonder what might have happened, the next few days will hopefully clear it up.