DRV8301 in a eBike project

I'm planning to build a PMSM driver for a eBike with 16 LiFePO4 batteries in series, so the maximum battery voltage is reaching 3.6*16=57.6V when fully charged, and the voltage will quickly decline to approx. 52V and stays there until drained. I have chosen DRV8301 as the MOSFET pre-driver. So the questions -

1) Is it safe for the DRV8301 to be working at this near-limit of 60V? The other components such as MOSFETs or capacitors are up to 100V rated.

2) I've saw in the datasheet of DRV8301 8.1.1 Gate Driver Power-Up Sequencing Errata, it says that the SH_X pins (which are connected to the motor's phase) should not exceed 8.5V when EN_GATE is asserted with PVDD power already applied. Does that mean, if my PM motor is already spinning at a relatively high speed (so the generated phase voltage exceeds 8.5V) when I power up the gate driver, it will not work correctly?

Well that makes me think of a situation when I turn off the control power off for a moment without disconnecting the main power when the eBike is in motion, then it won't work anymore unless you stop the bike and restart the power! That's typical for a eBike because only control power can be switched off in order to save the cost of a large power switch or relay.