I'm not so sure. I can think of several not so implausible scenarios, most of them involving some combination of the following:
1) The parent firm has a silent stake in the troll firm
2) John McAleese truly believed and somehow convinced his partners that he/they wouldn't be implicated in this
3) John McAleese had some sort of leverage over the firm
It might not make sense to any of us, but despite that, John McAleese appears to have been employed there as recently as last week, despite his wife operating a company that has openly been trolling around its touchscreen patent for years.
It might make sense to them if they thought Apple wouldn't be able to connect the dots or hold them responsible, and/or they had some sort of incentive that outweighed what they perceived to be the potential fallout. I doubt we'll ever learn for sure what the true story was.