Hey there,
Since you already have some good answers here, I would like to add one thing about getting around a ban.
While I agree with Ian not to circumvent the ban with trickery, there is an actual and practical way to make it work for you (potentially).
Once banned, start networking, get some new referrals, and active discussions with consultants going.
I failed my McK internship interviews, yet was able to secure my full-time interviews much earlier than theoretically possible due to the ban. How? By networking while being abroad for my Masters, meeting up with consultants from the office, and helping them with their local recruiting efforts. When the time came to re-apply, I got referred to HR in my home country and 2 days later received the invitation for the PST and the interview day (without going through the electronic data processing, etc.).
Key point is to be creative and find ways to make it work.
Hope this helps!
Cheers,
Florian