Bids are open for the PCC rebuild program, which is slated to overhaul the propulsion and trucks on 8 out of the 10 Mattapan PCC's. If one of these accident casualties doesn't end up a good value to repair, they simply swap out that unit for one of the long-term OOS 3234, 3238, 3265 grouping and arrive at 8 overhauled units all the same. So they aren't in any long-term danger of having too small a fleet to operate. I don't know when bids close and how soon after the contract is awarded that the T will be providing the winning vendor with the parts upgrade kits, so it's not yet known how long they'll have to skate on zero reserves (1 year? 2?). I would assume now, if it wasn't the plan all along, that the overhauls will target the OOS units first as a practicality of it being impossible to rotate out active units without harming headways.
FWIW, the damage to 3262 doesn't look bad at all. It might be held OOS until the overhaul program before getting body work, but the front end is barely even dented. And they're designed to take a beating on the front-end because of the far more frequent streetcar-on-auto collisions at grade crossings and intersections, so most of that is probably superficial. I doubt it takes much cost or effort to repair that. It's simply a question of whether 3262 makes the cut for the 8 units slated for overhaul now or if it gets dropped into the final 2 remainder mothballed units TBD for any further repair action. But it's extremely unlikely that the vehicle is in any way totaled.