I would say: LTC might have primarily surged / surges cause of Litepay, but LCC is helping LTC in the following way:

1. Some see two reasons to buy LTC before fork, even if the LCC reason is considered much weaker of an argument than Litepay, it is still a supportive argument
2. LTC is being simply pulled of the exchanges to collect LCCs
  2a. This might have created a (slight) virtual shortage of LTC being sold
  2b. (Casual) day-traders might stop day-trading for a day or two to collect LCC, leaving mostly long/mid-term traders in action, making the virtual shortage of LTC (from previous point) more prominent (i.e., not many are really selling any LTC for a "reasonable" price at any given moment of a day)
  2c. With LTC "partly gone" from the exchanges, all orders of these LTC owners are gone, even the invisible, stop loss ones => among other things, less panicking (not that there is some currently, but heavy profit collecting could have happened with LTC already, LCC helped that not to happen to the extent it could have happened)