Although in the paragraph you emphasized, they use the word and:
The MSSP module can operate in one of two modes:
- Serial Peripheral Interface (SPI)
- Inter-Integrated Circuit (I2C™)
Datasheet, page 164.
But you can software implement the I2C protocol on other pins.
However:
You can normally mix I2C and SPI on the same pins. I2C only does something between START and STOP.
According to http://www.i2cchip.com/mix_spi_i2c.html
Also check this: I2C and SPI ,if they share same connection , is there confilict or not