Jervis was lazy. He was built like veal. He earned that. There was an article over on 'the other site' where Wex said something like "folks think you need to get stronger, you going to start lifting weights" and his response was "nah, that's not my thing"
his pass rushing "repertoire" was the same at year 4 of the NFL as it was his final college season. He improved on nothing other than his understanding of the NFL game. Lazy, plain old lazy.
This was always my take on Jervis- the last 2-3 years at least. He's the only young front seven guy on the team that didn't physically change from year one on. Lazy and didn't love the game/job is what I assumed at some point. He still made, what, $10mm or so for four years work? And, will continue to make almost $1mm a year as long as he stays on a roster. My guess is he saw this as an opportunity to just get by and make himself $10-15mm over a 6-7 year period and then be set for life. At least he didn't fool us into a $50mm loss like Woodley did!