Novatel air card patch?

I've got a Sprint Novatel aircard and 2 computers, a desktop and a laptop. We were both able to access the internet via our home network, but then Sprint updated the software and now we can't have more than one network connection enabled and connected without our internet connection getting shut down. Is there some fix out there that will fix this frakkin' fix?
Ethically speaking, considering I pay nearly $200 per month for 2 phone lines and the air card line (3 lines total), I don't think having both computers able to access the internet via the air card is too much to ask...
What say you?
Thanks,
Karen