Been thinking about this and I have a theory on how it's going to play out....
Frank's injury and weekly status has morphed into a complete farce to the point that not only fans are mocking it, but also pundits. To simply retire now, after all of this time, would smack in the face the team's and his notion that he's working extremely hard to get back on the field. With all of the time spent with the physio, Frank now has to play a game, even if only one, to justify the 14+ weeks. I'll venture that he's either going to "re-injure" himself in the 1st game back or subsequently right after it, and then after careful consideration and discussion with the team, retire. The recurrence of injury will of course be for PR purposes only - he won't be the second coming of Calle off an injury. But it will show that Lamps was focused and did what was needed to play again, but alas, his body just can't do it. Full of tears, he bids farewell to the sport he loves, retires effective immediately, and heads straight to the airport to fly to London to see his wife (who allegedly refuses to live in NYC) and is local for the Euro coverage.