So, as I read it, you leave within 5 years and you revert to your original TOS, pension etc but, importantly, you can leave if everything goes to a crock of shte post-2015.
UG
I think you will find you have quoted the rules for how to treat someone who leaves PA, but without doing 5 years on PATOS; like I did in the past.
New PATOS are being offered (to every pilot beyond 3 years to IPP, so it would seem), but with a ROS requirement of 5 years from the start of your new TOS, which is a different arguement.