Since this is a "TEMPORARY" situation, why not just go to Lakeland station and change ends and take the wye towards Taunton? Most commuters won't mind riding backwards for a bit.
Because the already laughably long transit times to FR/NB via that route would just become pants-on-head fruitless if you had to bake in a 10-minute pause for the reverse, then deal with the daily uncertainty of a mechanical fault on the revenue-service reverse causing additional delays.
There's no solution to this that preserves the illusion that this routing is plausible. Either they shoot their most successful I-495 belt TOD stop in the head by moving Middleboro Station north of the junction and galvanize the opposition in M'boro even further, or they make such a mockery of travel times with the reverse at the existing station that the SCR Task Force and their lackeys throw a great big I/Me/Mine temper tantrum. There aren't any straws left to grasp.