Tethered? This could describe two conditions I can think of offhand:
Short Frenulum- you wouldn't be able to see this on a newborn unless retracted (bad thought). This is where the frenulum (like the one under your tongue) is attached closer to the meatus, making retraction difficult, possibly painful erections, possibly a bent penis... But, once again, wouldn't know unless the baby had been retracted! This can be "cured" with stretching exercises and/or steroid cream around puberty. Can also be surgically corrected by snipping the frenulum... DEFINATELY not a cause for circ, and shouldn't even be thinking about this condition at such a young age.
Can't remember what it's called and can't find the link- possibly micropenis? embedded penis? Where the tendons/ligaments holding the penis stable are too short INSIDE the body. Can also be because of a large pubic fat pad, which the baby will grow out of... Basically, they cut the tendons/ligaments in the pelvic cavity, allowing the penis to come forward at a more "normal" length. Often, the shaft skin is then sewn to the pubic mound to keep the penis from retreating into the body again
I can't see why they would say circ, though... It would do much more harm than good in either case. If you could give more description, we would be glad to do some research!