Another quick thought that just occurred to me. If I read Miguel's last cap post correctly, that prior to these signings, if nothing changed prior to the beginning of the league's new year, the Pats would be under water somewhere around $4MM on the 2015 cap. While small, these new signings only add more to the potential deficit. Now it should be noted that Miguel also showed how "easily" they can realistically shave over $26MM off that number and still keep just about everyone.
I only mention this in that these re-signings make it pretty clear that they are already pretty far along with negotiations with the big name FA's we have to take care of. and other guys like Mayo, DA,. and Vince who might need restructuring. It they weren't, I don't think they would be announcing these relatively small deals this early, which only add to the deficit.