there is no sub-set 100 day auto-boot in effect
Fizzer had been talking about putting in a 90 day inactivity auto-suspension, but has recently pointed out that it was never actually put into affect..
the ladder has an auto-boot of 3days
tourneys could have exception auto-boots added with the tourney host emailing Fizzer with the tourney link and a description of the problem..
I don't know if this is still allowed in games that were created after auto-boot was put out, but it would be your best bet to Email Fizzer, and/or have your Tourney Host Email Fizzer to attempt to get an exception auto-boot put into place for that tourney..
keep in mind, this will likely be a long duration auto-boot, 90-100 days