Mine is heading toward this. I was climbing across my car (don't ask) with my Eris plugged in, sticking out next to my radio. I brushed my body against the base of my Eris where the charger goes in, and I bent/broke the charging cable where it plugs in. The Eris port seems fine, but every cable I plug in wiggles alittle bit.
NO trouble with connectivity yet. I'd go to Verizon and see what they can do for you.
The sad part might be that they say that the $70 insurance replacement (if you have insurance) is the best that they can do?